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sys/fs/nfsclient/nfs_clrpcops.c
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1 /*- 2 * Copyright (c) 1989, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Rick Macklem at The University of Guelph. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 4. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 */ 33 34 #include <sys/cdefs.h> 35 __FBSDID("$FreeBSD: releng/10.1/sys/fs/nfsclient/nfs_clrpcops.c 265469 2014-05-06 21:54:52Z rmacklem $"); 36 37 /* 38 * Rpc op calls, generally called from the vnode op calls or through the 39 * buffer cache, for NFS v2, 3 and 4. 40 * These do not normally make any changes to vnode arguments or use 41 * structures that might change between the VFS variants. The returned 42 * arguments are all at the end, after the NFSPROC_T *p one. 43 */ 44 45 #ifndef APPLEKEXT 46 #include "opt_inet6.h" 47 48 #include <fs/nfs/nfsport.h> 49 50 /* 51 * Global variables 52 */ 53 extern int nfs_numnfscbd; 54 extern struct timeval nfsboottime; 55 extern u_int32_t newnfs_false, newnfs_true; 56 extern nfstype nfsv34_type[9]; 57 extern int nfsrv_useacl; 58 extern char nfsv4_callbackaddr[INET6_ADDRSTRLEN]; 59 extern int nfscl_debuglevel; 60 NFSCLSTATEMUTEX; 61 int nfstest_outofseq = 0; 62 int nfscl_assumeposixlocks = 1; 63 int nfscl_enablecallb = 0; 64 short nfsv4_cbport = NFSV4_CBPORT; 65 int nfstest_openallsetattr = 0; 66 #endif /* !APPLEKEXT */ 67 68 #define DIRHDSIZ (sizeof (struct dirent) - (MAXNAMLEN + 1)) 69 70 /* 71 * nfscl_getsameserver() can return one of three values: 72 * NFSDSP_USETHISSESSION - Use this session for the DS. 73 * NFSDSP_SEQTHISSESSION - Use the nfsclds_sequence field of this dsp for new 74 * session. 75 * NFSDSP_NOTFOUND - No matching server was found. 76 */ 77 enum nfsclds_state { 78 NFSDSP_USETHISSESSION = 0, 79 NFSDSP_SEQTHISSESSION = 1, 80 NFSDSP_NOTFOUND = 2, 81 }; 82 83 static int nfsrpc_setattrrpc(vnode_t , struct vattr *, nfsv4stateid_t *, 84 struct ucred *, NFSPROC_T *, struct nfsvattr *, int *, void *); 85 static int nfsrpc_readrpc(vnode_t , struct uio *, struct ucred *, 86 nfsv4stateid_t *, NFSPROC_T *, struct nfsvattr *, int *, void *); 87 static int nfsrpc_writerpc(vnode_t , struct uio *, int *, int *, 88 struct ucred *, nfsv4stateid_t *, NFSPROC_T *, struct nfsvattr *, int *, 89 void *); 90 static int nfsrpc_createv23(vnode_t , char *, int, struct vattr *, 91 nfsquad_t, int, struct ucred *, NFSPROC_T *, struct nfsvattr *, 92 struct nfsvattr *, struct nfsfh **, int *, int *, void *); 93 static int nfsrpc_createv4(vnode_t , char *, int, struct vattr *, 94 nfsquad_t, int, struct nfsclowner *, struct nfscldeleg **, struct ucred *, 95 NFSPROC_T *, struct nfsvattr *, struct nfsvattr *, struct nfsfh **, int *, 96 int *, void *, int *); 97 static int nfsrpc_locku(struct nfsrv_descript *, struct nfsmount *, 98 struct nfscllockowner *, u_int64_t, u_int64_t, 99 u_int32_t, struct ucred *, NFSPROC_T *, int); 100 static int nfsrpc_setaclrpc(vnode_t, struct ucred *, NFSPROC_T *, 101 struct acl *, nfsv4stateid_t *, void *); 102 static int nfsrpc_getlayout(struct nfsmount *, vnode_t, struct nfsfh *, int, 103 uint32_t *, nfsv4stateid_t *, uint64_t, struct nfscllayout **, 104 struct ucred *, NFSPROC_T *); 105 static int nfsrpc_fillsa(struct nfsmount *, struct sockaddr_storage *, 106 struct nfsclds **, NFSPROC_T *); 107 static void nfscl_initsessionslots(struct nfsclsession *); 108 static int nfscl_doflayoutio(vnode_t, struct uio *, int *, int *, int *, 109 nfsv4stateid_t *, int, struct nfscldevinfo *, struct nfscllayout *, 110 struct nfsclflayout *, uint64_t, uint64_t, struct ucred *, NFSPROC_T *); 111 static int nfsrpc_readds(vnode_t, struct uio *, nfsv4stateid_t *, int *, 112 struct nfsclds *, uint64_t, int, struct nfsfh *, struct ucred *, 113 NFSPROC_T *); 114 static int nfsrpc_writeds(vnode_t, struct uio *, int *, int *, 115 nfsv4stateid_t *, struct nfsclds *, uint64_t, int, 116 struct nfsfh *, int, struct ucred *, NFSPROC_T *); 117 static enum nfsclds_state nfscl_getsameserver(struct nfsmount *, 118 struct nfsclds *, struct nfsclds **); 119 #ifdef notyet 120 static int nfsrpc_commitds(vnode_t, uint64_t, int, struct nfsclds *, 121 struct nfsfh *, struct ucred *, NFSPROC_T *, void *); 122 #endif 123 124 /* 125 * nfs null call from vfs. 126 */ 127 APPLESTATIC int 128 nfsrpc_null(vnode_t vp, struct ucred *cred, NFSPROC_T *p) 129 { 130 int error; 131 struct nfsrv_descript nfsd, *nd = &nfsd; 132 133 NFSCL_REQSTART(nd, NFSPROC_NULL, vp); 134 error = nfscl_request(nd, vp, p, cred, NULL); 135 if (nd->nd_repstat && !error) 136 error = nd->nd_repstat; 137 mbuf_freem(nd->nd_mrep); 138 return (error); 139 } 140 141 /* 142 * nfs access rpc op. 143 * For nfs version 3 and 4, use the access rpc to check accessibility. If file 144 * modes are changed on the server, accesses might still fail later. 145 */ 146 APPLESTATIC int 147 nfsrpc_access(vnode_t vp, int acmode, struct ucred *cred, 148 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp) 149 { 150 int error; 151 u_int32_t mode, rmode; 152 153 if (acmode & VREAD) 154 mode = NFSACCESS_READ; 155 else 156 mode = 0; 157 if (vnode_vtype(vp) == VDIR) { 158 if (acmode & VWRITE) 159 mode |= (NFSACCESS_MODIFY | NFSACCESS_EXTEND | 160 NFSACCESS_DELETE); 161 if (acmode & VEXEC) 162 mode |= NFSACCESS_LOOKUP; 163 } else { 164 if (acmode & VWRITE) 165 mode |= (NFSACCESS_MODIFY | NFSACCESS_EXTEND); 166 if (acmode & VEXEC) 167 mode |= NFSACCESS_EXECUTE; 168 } 169 170 /* 171 * Now, just call nfsrpc_accessrpc() to do the actual RPC. 172 */ 173 error = nfsrpc_accessrpc(vp, mode, cred, p, nap, attrflagp, &rmode, 174 NULL); 175 176 /* 177 * The NFS V3 spec does not clarify whether or not 178 * the returned access bits can be a superset of 179 * the ones requested, so... 180 */ 181 if (!error && (rmode & mode) != mode) 182 error = EACCES; 183 return (error); 184 } 185 186 /* 187 * The actual rpc, separated out for Darwin. 188 */ 189 APPLESTATIC int 190 nfsrpc_accessrpc(vnode_t vp, u_int32_t mode, struct ucred *cred, 191 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, u_int32_t *rmodep, 192 void *stuff) 193 { 194 u_int32_t *tl; 195 u_int32_t supported, rmode; 196 int error; 197 struct nfsrv_descript nfsd, *nd = &nfsd; 198 nfsattrbit_t attrbits; 199 200 *attrflagp = 0; 201 supported = mode; 202 NFSCL_REQSTART(nd, NFSPROC_ACCESS, vp); 203 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 204 *tl = txdr_unsigned(mode); 205 if (nd->nd_flag & ND_NFSV4) { 206 /* 207 * And do a Getattr op. 208 */ 209 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 210 *tl = txdr_unsigned(NFSV4OP_GETATTR); 211 NFSGETATTR_ATTRBIT(&attrbits); 212 (void) nfsrv_putattrbit(nd, &attrbits); 213 } 214 error = nfscl_request(nd, vp, p, cred, stuff); 215 if (error) 216 return (error); 217 if (nd->nd_flag & ND_NFSV3) { 218 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 219 if (error) 220 goto nfsmout; 221 } 222 if (!nd->nd_repstat) { 223 if (nd->nd_flag & ND_NFSV4) { 224 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 225 supported = fxdr_unsigned(u_int32_t, *tl++); 226 } else { 227 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 228 } 229 rmode = fxdr_unsigned(u_int32_t, *tl); 230 if (nd->nd_flag & ND_NFSV4) 231 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 232 233 /* 234 * It's not obvious what should be done about 235 * unsupported access modes. For now, be paranoid 236 * and clear the unsupported ones. 237 */ 238 rmode &= supported; 239 *rmodep = rmode; 240 } else 241 error = nd->nd_repstat; 242 nfsmout: 243 mbuf_freem(nd->nd_mrep); 244 return (error); 245 } 246 247 /* 248 * nfs open rpc 249 */ 250 APPLESTATIC int 251 nfsrpc_open(vnode_t vp, int amode, struct ucred *cred, NFSPROC_T *p) 252 { 253 struct nfsclopen *op; 254 struct nfscldeleg *dp; 255 struct nfsfh *nfhp; 256 struct nfsnode *np = VTONFS(vp); 257 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 258 u_int32_t mode, clidrev; 259 int ret, newone, error, expireret = 0, retrycnt; 260 261 /* 262 * For NFSv4, Open Ops are only done on Regular Files. 263 */ 264 if (vnode_vtype(vp) != VREG) 265 return (0); 266 mode = 0; 267 if (amode & FREAD) 268 mode |= NFSV4OPEN_ACCESSREAD; 269 if (amode & FWRITE) 270 mode |= NFSV4OPEN_ACCESSWRITE; 271 nfhp = np->n_fhp; 272 273 retrycnt = 0; 274 #ifdef notdef 275 { char name[100]; int namel; 276 namel = (np->n_v4->n4_namelen < 100) ? np->n_v4->n4_namelen : 99; 277 bcopy(NFS4NODENAME(np->n_v4), name, namel); 278 name[namel] = '\0'; 279 printf("rpcopen p=0x%x name=%s",p->p_pid,name); 280 if (nfhp->nfh_len > 0) printf(" fh=0x%x\n",nfhp->nfh_fh[12]); 281 else printf(" fhl=0\n"); 282 } 283 #endif 284 do { 285 dp = NULL; 286 error = nfscl_open(vp, nfhp->nfh_fh, nfhp->nfh_len, mode, 1, 287 cred, p, NULL, &op, &newone, &ret, 1); 288 if (error) { 289 return (error); 290 } 291 if (nmp->nm_clp != NULL) 292 clidrev = nmp->nm_clp->nfsc_clientidrev; 293 else 294 clidrev = 0; 295 if (ret == NFSCLOPEN_DOOPEN) { 296 if (np->n_v4 != NULL) { 297 error = nfsrpc_openrpc(nmp, vp, np->n_v4->n4_data, 298 np->n_v4->n4_fhlen, np->n_fhp->nfh_fh, 299 np->n_fhp->nfh_len, mode, op, 300 NFS4NODENAME(np->n_v4), np->n_v4->n4_namelen, &dp, 301 0, 0x0, cred, p, 0, 0); 302 if (dp != NULL) { 303 #ifdef APPLE 304 OSBitAndAtomic((int32_t)~NDELEGMOD, (UInt32 *)&np->n_flag); 305 #else 306 NFSLOCKNODE(np); 307 np->n_flag &= ~NDELEGMOD; 308 /* 309 * Invalidate the attribute cache, so that 310 * attributes that pre-date the issue of a 311 * delegation are not cached, since the 312 * cached attributes will remain valid while 313 * the delegation is held. 314 */ 315 NFSINVALATTRCACHE(np); 316 NFSUNLOCKNODE(np); 317 #endif 318 (void) nfscl_deleg(nmp->nm_mountp, 319 op->nfso_own->nfsow_clp, 320 nfhp->nfh_fh, nfhp->nfh_len, cred, p, &dp); 321 } 322 } else { 323 error = EIO; 324 } 325 newnfs_copyincred(cred, &op->nfso_cred); 326 } else if (ret == NFSCLOPEN_SETCRED) 327 /* 328 * This is a new local open on a delegation. It needs 329 * to have credentials so that an open can be done 330 * against the server during recovery. 331 */ 332 newnfs_copyincred(cred, &op->nfso_cred); 333 334 /* 335 * nfso_opencnt is the count of how many VOP_OPEN()s have 336 * been done on this Open successfully and a VOP_CLOSE() 337 * is expected for each of these. 338 * If error is non-zero, don't increment it, since the Open 339 * hasn't succeeded yet. 340 */ 341 if (!error) 342 op->nfso_opencnt++; 343 nfscl_openrelease(op, error, newone); 344 if (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID || 345 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 346 error == NFSERR_BADSESSION) { 347 (void) nfs_catnap(PZERO, error, "nfs_open"); 348 } else if ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) 349 && clidrev != 0) { 350 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 351 retrycnt++; 352 } 353 } while (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID || 354 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 355 error == NFSERR_BADSESSION || 356 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 357 expireret == 0 && clidrev != 0 && retrycnt < 4)); 358 if (error && retrycnt >= 4) 359 error = EIO; 360 return (error); 361 } 362 363 /* 364 * the actual open rpc 365 */ 366 APPLESTATIC int 367 nfsrpc_openrpc(struct nfsmount *nmp, vnode_t vp, u_int8_t *nfhp, int fhlen, 368 u_int8_t *newfhp, int newfhlen, u_int32_t mode, struct nfsclopen *op, 369 u_int8_t *name, int namelen, struct nfscldeleg **dpp, 370 int reclaim, u_int32_t delegtype, struct ucred *cred, NFSPROC_T *p, 371 int syscred, int recursed) 372 { 373 u_int32_t *tl; 374 struct nfsrv_descript nfsd, *nd = &nfsd; 375 struct nfscldeleg *dp, *ndp = NULL; 376 struct nfsvattr nfsva; 377 u_int32_t rflags, deleg; 378 nfsattrbit_t attrbits; 379 int error, ret, acesize, limitby; 380 381 dp = *dpp; 382 *dpp = NULL; 383 nfscl_reqstart(nd, NFSPROC_OPEN, nmp, nfhp, fhlen, NULL, NULL); 384 NFSM_BUILD(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 385 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid); 386 *tl++ = txdr_unsigned(mode & NFSV4OPEN_ACCESSBOTH); 387 *tl++ = txdr_unsigned((mode >> NFSLCK_SHIFT) & NFSV4OPEN_DENYBOTH); 388 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0]; 389 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1]; 390 (void) nfsm_strtom(nd, op->nfso_own->nfsow_owner, NFSV4CL_LOCKNAMELEN); 391 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 392 *tl++ = txdr_unsigned(NFSV4OPEN_NOCREATE); 393 if (reclaim) { 394 *tl = txdr_unsigned(NFSV4OPEN_CLAIMPREVIOUS); 395 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 396 *tl = txdr_unsigned(delegtype); 397 } else { 398 if (dp != NULL) { 399 *tl = txdr_unsigned(NFSV4OPEN_CLAIMDELEGATECUR); 400 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 401 if (NFSHASNFSV4N(nmp)) 402 *tl++ = 0; 403 else 404 *tl++ = dp->nfsdl_stateid.seqid; 405 *tl++ = dp->nfsdl_stateid.other[0]; 406 *tl++ = dp->nfsdl_stateid.other[1]; 407 *tl = dp->nfsdl_stateid.other[2]; 408 } else { 409 *tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL); 410 } 411 (void) nfsm_strtom(nd, name, namelen); 412 } 413 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 414 *tl = txdr_unsigned(NFSV4OP_GETATTR); 415 NFSZERO_ATTRBIT(&attrbits); 416 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_CHANGE); 417 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEMODIFY); 418 (void) nfsrv_putattrbit(nd, &attrbits); 419 if (syscred) 420 nd->nd_flag |= ND_USEGSSNAME; 421 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, vp, p, cred, 422 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 423 if (error) 424 return (error); 425 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 426 if (!nd->nd_repstat) { 427 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 428 6 * NFSX_UNSIGNED); 429 op->nfso_stateid.seqid = *tl++; 430 op->nfso_stateid.other[0] = *tl++; 431 op->nfso_stateid.other[1] = *tl++; 432 op->nfso_stateid.other[2] = *tl; 433 rflags = fxdr_unsigned(u_int32_t, *(tl + 6)); 434 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 435 if (error) 436 goto nfsmout; 437 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 438 deleg = fxdr_unsigned(u_int32_t, *tl); 439 if (deleg == NFSV4OPEN_DELEGATEREAD || 440 deleg == NFSV4OPEN_DELEGATEWRITE) { 441 if (!(op->nfso_own->nfsow_clp->nfsc_flags & 442 NFSCLFLAGS_FIRSTDELEG)) 443 op->nfso_own->nfsow_clp->nfsc_flags |= 444 (NFSCLFLAGS_FIRSTDELEG | NFSCLFLAGS_GOTDELEG); 445 MALLOC(ndp, struct nfscldeleg *, 446 sizeof (struct nfscldeleg) + newfhlen, 447 M_NFSCLDELEG, M_WAITOK); 448 LIST_INIT(&ndp->nfsdl_owner); 449 LIST_INIT(&ndp->nfsdl_lock); 450 ndp->nfsdl_clp = op->nfso_own->nfsow_clp; 451 ndp->nfsdl_fhlen = newfhlen; 452 NFSBCOPY(newfhp, ndp->nfsdl_fh, newfhlen); 453 newnfs_copyincred(cred, &ndp->nfsdl_cred); 454 nfscl_lockinit(&ndp->nfsdl_rwlock); 455 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 456 NFSX_UNSIGNED); 457 ndp->nfsdl_stateid.seqid = *tl++; 458 ndp->nfsdl_stateid.other[0] = *tl++; 459 ndp->nfsdl_stateid.other[1] = *tl++; 460 ndp->nfsdl_stateid.other[2] = *tl++; 461 ret = fxdr_unsigned(int, *tl); 462 if (deleg == NFSV4OPEN_DELEGATEWRITE) { 463 ndp->nfsdl_flags = NFSCLDL_WRITE; 464 /* 465 * Indicates how much the file can grow. 466 */ 467 NFSM_DISSECT(tl, u_int32_t *, 468 3 * NFSX_UNSIGNED); 469 limitby = fxdr_unsigned(int, *tl++); 470 switch (limitby) { 471 case NFSV4OPEN_LIMITSIZE: 472 ndp->nfsdl_sizelimit = fxdr_hyper(tl); 473 break; 474 case NFSV4OPEN_LIMITBLOCKS: 475 ndp->nfsdl_sizelimit = 476 fxdr_unsigned(u_int64_t, *tl++); 477 ndp->nfsdl_sizelimit *= 478 fxdr_unsigned(u_int64_t, *tl); 479 break; 480 default: 481 error = NFSERR_BADXDR; 482 goto nfsmout; 483 }; 484 } else { 485 ndp->nfsdl_flags = NFSCLDL_READ; 486 } 487 if (ret) 488 ndp->nfsdl_flags |= NFSCLDL_RECALL; 489 error = nfsrv_dissectace(nd, &ndp->nfsdl_ace, &ret, 490 &acesize, p); 491 if (error) 492 goto nfsmout; 493 } else if (deleg != NFSV4OPEN_DELEGATENONE) { 494 error = NFSERR_BADXDR; 495 goto nfsmout; 496 } 497 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 498 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 499 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 500 NULL, NULL, NULL, p, cred); 501 if (error) 502 goto nfsmout; 503 if (ndp != NULL) { 504 ndp->nfsdl_change = nfsva.na_filerev; 505 ndp->nfsdl_modtime = nfsva.na_mtime; 506 ndp->nfsdl_flags |= NFSCLDL_MODTIMESET; 507 } 508 if (!reclaim && (rflags & NFSV4OPEN_RESULTCONFIRM)) { 509 do { 510 ret = nfsrpc_openconfirm(vp, newfhp, newfhlen, op, 511 cred, p); 512 if (ret == NFSERR_DELAY) 513 (void) nfs_catnap(PZERO, ret, "nfs_open"); 514 } while (ret == NFSERR_DELAY); 515 error = ret; 516 } 517 if ((rflags & NFSV4OPEN_LOCKTYPEPOSIX) || 518 nfscl_assumeposixlocks) 519 op->nfso_posixlock = 1; 520 else 521 op->nfso_posixlock = 0; 522 523 /* 524 * If the server is handing out delegations, but we didn't 525 * get one because an OpenConfirm was required, try the 526 * Open again, to get a delegation. This is a harmless no-op, 527 * from a server's point of view. 528 */ 529 if (!reclaim && (rflags & NFSV4OPEN_RESULTCONFIRM) && 530 (op->nfso_own->nfsow_clp->nfsc_flags & NFSCLFLAGS_GOTDELEG) 531 && !error && dp == NULL && ndp == NULL && !recursed) { 532 do { 533 ret = nfsrpc_openrpc(nmp, vp, nfhp, fhlen, newfhp, 534 newfhlen, mode, op, name, namelen, &ndp, 0, 0x0, 535 cred, p, syscred, 1); 536 if (ret == NFSERR_DELAY) 537 (void) nfs_catnap(PZERO, ret, "nfs_open2"); 538 } while (ret == NFSERR_DELAY); 539 if (ret) { 540 if (ndp != NULL) 541 FREE((caddr_t)ndp, M_NFSCLDELEG); 542 if (ret == NFSERR_STALECLIENTID || 543 ret == NFSERR_STALEDONTRECOVER || 544 ret == NFSERR_BADSESSION) 545 error = ret; 546 } 547 } 548 } 549 if (nd->nd_repstat != 0 && error == 0) 550 error = nd->nd_repstat; 551 if (error == NFSERR_STALECLIENTID || error == NFSERR_BADSESSION) 552 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 553 nfsmout: 554 if (!error) 555 *dpp = ndp; 556 else if (ndp != NULL) 557 FREE((caddr_t)ndp, M_NFSCLDELEG); 558 mbuf_freem(nd->nd_mrep); 559 return (error); 560 } 561 562 /* 563 * open downgrade rpc 564 */ 565 APPLESTATIC int 566 nfsrpc_opendowngrade(vnode_t vp, u_int32_t mode, struct nfsclopen *op, 567 struct ucred *cred, NFSPROC_T *p) 568 { 569 u_int32_t *tl; 570 struct nfsrv_descript nfsd, *nd = &nfsd; 571 int error; 572 573 NFSCL_REQSTART(nd, NFSPROC_OPENDOWNGRADE, vp); 574 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 3 * NFSX_UNSIGNED); 575 if (NFSHASNFSV4N(VFSTONFS(vnode_mount(vp)))) 576 *tl++ = 0; 577 else 578 *tl++ = op->nfso_stateid.seqid; 579 *tl++ = op->nfso_stateid.other[0]; 580 *tl++ = op->nfso_stateid.other[1]; 581 *tl++ = op->nfso_stateid.other[2]; 582 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid); 583 *tl++ = txdr_unsigned(mode & NFSV4OPEN_ACCESSBOTH); 584 *tl = txdr_unsigned((mode >> NFSLCK_SHIFT) & NFSV4OPEN_DENYBOTH); 585 error = nfscl_request(nd, vp, p, cred, NULL); 586 if (error) 587 return (error); 588 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 589 if (!nd->nd_repstat) { 590 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 591 op->nfso_stateid.seqid = *tl++; 592 op->nfso_stateid.other[0] = *tl++; 593 op->nfso_stateid.other[1] = *tl++; 594 op->nfso_stateid.other[2] = *tl; 595 } 596 if (nd->nd_repstat && error == 0) 597 error = nd->nd_repstat; 598 if (error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION) 599 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 600 nfsmout: 601 mbuf_freem(nd->nd_mrep); 602 return (error); 603 } 604 605 /* 606 * V4 Close operation. 607 */ 608 APPLESTATIC int 609 nfsrpc_close(vnode_t vp, int doclose, NFSPROC_T *p) 610 { 611 struct nfsclclient *clp; 612 int error; 613 614 if (vnode_vtype(vp) != VREG) 615 return (0); 616 if (doclose) 617 error = nfscl_doclose(vp, &clp, p); 618 else 619 error = nfscl_getclose(vp, &clp); 620 if (error) 621 return (error); 622 623 nfscl_clientrelease(clp); 624 return (0); 625 } 626 627 /* 628 * Close the open. 629 */ 630 APPLESTATIC void 631 nfsrpc_doclose(struct nfsmount *nmp, struct nfsclopen *op, NFSPROC_T *p) 632 { 633 struct nfsrv_descript nfsd, *nd = &nfsd; 634 struct nfscllockowner *lp, *nlp; 635 struct nfscllock *lop, *nlop; 636 struct ucred *tcred; 637 u_int64_t off = 0, len = 0; 638 u_int32_t type = NFSV4LOCKT_READ; 639 int error, do_unlock, trycnt; 640 641 tcred = newnfs_getcred(); 642 newnfs_copycred(&op->nfso_cred, tcred); 643 /* 644 * (Theoretically this could be done in the same 645 * compound as the close, but having multiple 646 * sequenced Ops in the same compound might be 647 * too scary for some servers.) 648 */ 649 if (op->nfso_posixlock) { 650 off = 0; 651 len = NFS64BITSSET; 652 type = NFSV4LOCKT_READ; 653 } 654 655 /* 656 * Since this function is only called from VOP_INACTIVE(), no 657 * other thread will be manipulating this Open. As such, the 658 * lock lists are not being changed by other threads, so it should 659 * be safe to do this without locking. 660 */ 661 LIST_FOREACH(lp, &op->nfso_lock, nfsl_list) { 662 do_unlock = 1; 663 LIST_FOREACH_SAFE(lop, &lp->nfsl_lock, nfslo_list, nlop) { 664 if (op->nfso_posixlock == 0) { 665 off = lop->nfslo_first; 666 len = lop->nfslo_end - lop->nfslo_first; 667 if (lop->nfslo_type == F_WRLCK) 668 type = NFSV4LOCKT_WRITE; 669 else 670 type = NFSV4LOCKT_READ; 671 } 672 if (do_unlock) { 673 trycnt = 0; 674 do { 675 error = nfsrpc_locku(nd, nmp, lp, off, 676 len, type, tcred, p, 0); 677 if ((nd->nd_repstat == NFSERR_GRACE || 678 nd->nd_repstat == NFSERR_DELAY) && 679 error == 0) 680 (void) nfs_catnap(PZERO, 681 (int)nd->nd_repstat, 682 "nfs_close"); 683 } while ((nd->nd_repstat == NFSERR_GRACE || 684 nd->nd_repstat == NFSERR_DELAY) && 685 error == 0 && trycnt++ < 5); 686 if (op->nfso_posixlock) 687 do_unlock = 0; 688 } 689 nfscl_freelock(lop, 0); 690 } 691 /* 692 * Do a ReleaseLockOwner. 693 * The lock owner name nfsl_owner may be used by other opens for 694 * other files but the lock_owner4 name that nfsrpc_rellockown() 695 * puts on the wire has the file handle for this file appended 696 * to it, so it can be done now. 697 */ 698 (void)nfsrpc_rellockown(nmp, lp, lp->nfsl_open->nfso_fh, 699 lp->nfsl_open->nfso_fhlen, tcred, p); 700 } 701 702 /* 703 * There could be other Opens for different files on the same 704 * OpenOwner, so locking is required. 705 */ 706 NFSLOCKCLSTATE(); 707 nfscl_lockexcl(&op->nfso_own->nfsow_rwlock, NFSCLSTATEMUTEXPTR); 708 NFSUNLOCKCLSTATE(); 709 do { 710 error = nfscl_tryclose(op, tcred, nmp, p); 711 if (error == NFSERR_GRACE) 712 (void) nfs_catnap(PZERO, error, "nfs_close"); 713 } while (error == NFSERR_GRACE); 714 NFSLOCKCLSTATE(); 715 nfscl_lockunlock(&op->nfso_own->nfsow_rwlock); 716 717 LIST_FOREACH_SAFE(lp, &op->nfso_lock, nfsl_list, nlp) 718 nfscl_freelockowner(lp, 0); 719 nfscl_freeopen(op, 0); 720 NFSUNLOCKCLSTATE(); 721 NFSFREECRED(tcred); 722 } 723 724 /* 725 * The actual Close RPC. 726 */ 727 APPLESTATIC int 728 nfsrpc_closerpc(struct nfsrv_descript *nd, struct nfsmount *nmp, 729 struct nfsclopen *op, struct ucred *cred, NFSPROC_T *p, 730 int syscred) 731 { 732 u_int32_t *tl; 733 int error; 734 735 nfscl_reqstart(nd, NFSPROC_CLOSE, nmp, op->nfso_fh, 736 op->nfso_fhlen, NULL, NULL); 737 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED + NFSX_STATEID); 738 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid); 739 if (NFSHASNFSV4N(nmp)) 740 *tl++ = 0; 741 else 742 *tl++ = op->nfso_stateid.seqid; 743 *tl++ = op->nfso_stateid.other[0]; 744 *tl++ = op->nfso_stateid.other[1]; 745 *tl = op->nfso_stateid.other[2]; 746 if (syscred) 747 nd->nd_flag |= ND_USEGSSNAME; 748 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 749 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 750 if (error) 751 return (error); 752 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 753 if (nd->nd_repstat == 0) 754 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 755 error = nd->nd_repstat; 756 if (error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION) 757 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 758 nfsmout: 759 mbuf_freem(nd->nd_mrep); 760 return (error); 761 } 762 763 /* 764 * V4 Open Confirm RPC. 765 */ 766 APPLESTATIC int 767 nfsrpc_openconfirm(vnode_t vp, u_int8_t *nfhp, int fhlen, 768 struct nfsclopen *op, struct ucred *cred, NFSPROC_T *p) 769 { 770 u_int32_t *tl; 771 struct nfsrv_descript nfsd, *nd = &nfsd; 772 struct nfsmount *nmp; 773 int error; 774 775 nmp = VFSTONFS(vnode_mount(vp)); 776 if (NFSHASNFSV4N(nmp)) 777 return (0); /* No confirmation for NFSv4.1. */ 778 nfscl_reqstart(nd, NFSPROC_OPENCONFIRM, nmp, nfhp, fhlen, NULL, NULL); 779 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED + NFSX_STATEID); 780 *tl++ = op->nfso_stateid.seqid; 781 *tl++ = op->nfso_stateid.other[0]; 782 *tl++ = op->nfso_stateid.other[1]; 783 *tl++ = op->nfso_stateid.other[2]; 784 *tl = txdr_unsigned(op->nfso_own->nfsow_seqid); 785 error = nfscl_request(nd, vp, p, cred, NULL); 786 if (error) 787 return (error); 788 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 789 if (!nd->nd_repstat) { 790 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 791 op->nfso_stateid.seqid = *tl++; 792 op->nfso_stateid.other[0] = *tl++; 793 op->nfso_stateid.other[1] = *tl++; 794 op->nfso_stateid.other[2] = *tl; 795 } 796 error = nd->nd_repstat; 797 if (error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION) 798 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 799 nfsmout: 800 mbuf_freem(nd->nd_mrep); 801 return (error); 802 } 803 804 /* 805 * Do the setclientid and setclientid confirm RPCs. Called from nfs_statfs() 806 * when a mount has just occurred and when the server replies NFSERR_EXPIRED. 807 */ 808 APPLESTATIC int 809 nfsrpc_setclient(struct nfsmount *nmp, struct nfsclclient *clp, int reclaim, 810 struct ucred *cred, NFSPROC_T *p) 811 { 812 u_int32_t *tl; 813 struct nfsrv_descript nfsd; 814 struct nfsrv_descript *nd = &nfsd; 815 nfsattrbit_t attrbits; 816 u_int8_t *cp = NULL, *cp2, addr[INET6_ADDRSTRLEN + 9]; 817 u_short port; 818 int error, isinet6 = 0, callblen; 819 nfsquad_t confirm; 820 u_int32_t lease; 821 static u_int32_t rev = 0; 822 struct nfsclds *dsp, *ndsp, *tdsp; 823 824 if (nfsboottime.tv_sec == 0) 825 NFSSETBOOTTIME(nfsboottime); 826 clp->nfsc_rev = rev++; 827 if (NFSHASNFSV4N(nmp)) { 828 error = nfsrpc_exchangeid(nmp, clp, &nmp->nm_sockreq, 829 NFSV4EXCH_USEPNFSMDS | NFSV4EXCH_USENONPNFS, &dsp, cred, p); 830 NFSCL_DEBUG(1, "aft exch=%d\n", error); 831 if (error == 0) { 832 error = nfsrpc_createsession(nmp, &dsp->nfsclds_sess, 833 &nmp->nm_sockreq, 834 dsp->nfsclds_sess.nfsess_sequenceid, 1, cred, p); 835 if (error == 0) { 836 NFSLOCKMNT(nmp); 837 TAILQ_FOREACH_SAFE(tdsp, &nmp->nm_sess, 838 nfsclds_list, ndsp) 839 nfscl_freenfsclds(tdsp); 840 TAILQ_INIT(&nmp->nm_sess); 841 TAILQ_INSERT_HEAD(&nmp->nm_sess, dsp, 842 nfsclds_list); 843 NFSUNLOCKMNT(nmp); 844 } else 845 nfscl_freenfsclds(dsp); 846 NFSCL_DEBUG(1, "aft createsess=%d\n", error); 847 } 848 if (error == 0 && reclaim == 0) { 849 error = nfsrpc_reclaimcomplete(nmp, cred, p); 850 NFSCL_DEBUG(1, "aft reclaimcomp=%d\n", error); 851 if (error == NFSERR_COMPLETEALREADY || 852 error == NFSERR_NOTSUPP) 853 /* Ignore this error. */ 854 error = 0; 855 } 856 return (error); 857 } 858 859 /* 860 * Allocate a single session structure for NFSv4.0, because some of 861 * the fields are used by NFSv4.0 although it doesn't do a session. 862 */ 863 dsp = malloc(sizeof(struct nfsclds), M_NFSCLDS, M_WAITOK | M_ZERO); 864 mtx_init(&dsp->nfsclds_mtx, "nfsds", NULL, MTX_DEF); 865 mtx_init(&dsp->nfsclds_sess.nfsess_mtx, "nfssession", NULL, MTX_DEF); 866 NFSLOCKMNT(nmp); 867 TAILQ_INSERT_HEAD(&nmp->nm_sess, dsp, nfsclds_list); 868 NFSUNLOCKMNT(nmp); 869 870 nfscl_reqstart(nd, NFSPROC_SETCLIENTID, nmp, NULL, 0, NULL, NULL); 871 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 872 *tl++ = txdr_unsigned(nfsboottime.tv_sec); 873 *tl = txdr_unsigned(clp->nfsc_rev); 874 (void) nfsm_strtom(nd, clp->nfsc_id, clp->nfsc_idlen); 875 876 /* 877 * set up the callback address 878 */ 879 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 880 *tl = txdr_unsigned(NFS_CALLBCKPROG); 881 callblen = strlen(nfsv4_callbackaddr); 882 if (callblen == 0) 883 cp = nfscl_getmyip(nmp, &isinet6); 884 if (nfscl_enablecallb && nfs_numnfscbd > 0 && 885 (callblen > 0 || cp != NULL)) { 886 port = htons(nfsv4_cbport); 887 cp2 = (u_int8_t *)&port; 888 #ifdef INET6 889 if ((callblen > 0 && 890 strchr(nfsv4_callbackaddr, ':')) || isinet6) { 891 char ip6buf[INET6_ADDRSTRLEN], *ip6add; 892 893 (void) nfsm_strtom(nd, "tcp6", 4); 894 if (callblen == 0) { 895 ip6_sprintf(ip6buf, (struct in6_addr *)cp); 896 ip6add = ip6buf; 897 } else { 898 ip6add = nfsv4_callbackaddr; 899 } 900 snprintf(addr, INET6_ADDRSTRLEN + 9, "%s.%d.%d", 901 ip6add, cp2[0], cp2[1]); 902 } else 903 #endif 904 { 905 (void) nfsm_strtom(nd, "tcp", 3); 906 if (callblen == 0) 907 snprintf(addr, INET6_ADDRSTRLEN + 9, 908 "%d.%d.%d.%d.%d.%d", cp[0], cp[1], 909 cp[2], cp[3], cp2[0], cp2[1]); 910 else 911 snprintf(addr, INET6_ADDRSTRLEN + 9, 912 "%s.%d.%d", nfsv4_callbackaddr, 913 cp2[0], cp2[1]); 914 } 915 (void) nfsm_strtom(nd, addr, strlen(addr)); 916 } else { 917 (void) nfsm_strtom(nd, "tcp", 3); 918 (void) nfsm_strtom(nd, "0.0.0.0.0.0", 11); 919 } 920 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 921 *tl = txdr_unsigned(clp->nfsc_cbident); 922 nd->nd_flag |= ND_USEGSSNAME; 923 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 924 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 925 if (error) 926 return (error); 927 if (nd->nd_repstat == 0) { 928 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 929 NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0] = *tl++; 930 NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1] = *tl++; 931 confirm.lval[0] = *tl++; 932 confirm.lval[1] = *tl; 933 mbuf_freem(nd->nd_mrep); 934 nd->nd_mrep = NULL; 935 936 /* 937 * and confirm it. 938 */ 939 nfscl_reqstart(nd, NFSPROC_SETCLIENTIDCFRM, nmp, NULL, 0, NULL, 940 NULL); 941 NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 942 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0]; 943 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1]; 944 *tl++ = confirm.lval[0]; 945 *tl = confirm.lval[1]; 946 nd->nd_flag |= ND_USEGSSNAME; 947 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, 948 cred, NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 949 if (error) 950 return (error); 951 mbuf_freem(nd->nd_mrep); 952 nd->nd_mrep = NULL; 953 if (nd->nd_repstat == 0) { 954 nfscl_reqstart(nd, NFSPROC_GETATTR, nmp, nmp->nm_fh, 955 nmp->nm_fhsize, NULL, NULL); 956 NFSZERO_ATTRBIT(&attrbits); 957 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_LEASETIME); 958 (void) nfsrv_putattrbit(nd, &attrbits); 959 nd->nd_flag |= ND_USEGSSNAME; 960 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, 961 cred, NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 962 if (error) 963 return (error); 964 if (nd->nd_repstat == 0) { 965 error = nfsv4_loadattr(nd, NULL, NULL, NULL, NULL, 0, NULL, 966 NULL, NULL, NULL, NULL, 0, NULL, &lease, NULL, p, cred); 967 if (error) 968 goto nfsmout; 969 clp->nfsc_renew = NFSCL_RENEW(lease); 970 clp->nfsc_expire = NFSD_MONOSEC + clp->nfsc_renew; 971 clp->nfsc_clientidrev++; 972 if (clp->nfsc_clientidrev == 0) 973 clp->nfsc_clientidrev++; 974 } 975 } 976 } 977 error = nd->nd_repstat; 978 nfsmout: 979 mbuf_freem(nd->nd_mrep); 980 return (error); 981 } 982 983 /* 984 * nfs getattr call. 985 */ 986 APPLESTATIC int 987 nfsrpc_getattr(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 988 struct nfsvattr *nap, void *stuff) 989 { 990 struct nfsrv_descript nfsd, *nd = &nfsd; 991 int error; 992 nfsattrbit_t attrbits; 993 994 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp); 995 if (nd->nd_flag & ND_NFSV4) { 996 NFSGETATTR_ATTRBIT(&attrbits); 997 (void) nfsrv_putattrbit(nd, &attrbits); 998 } 999 error = nfscl_request(nd, vp, p, cred, stuff); 1000 if (error) 1001 return (error); 1002 if (!nd->nd_repstat) 1003 error = nfsm_loadattr(nd, nap); 1004 else 1005 error = nd->nd_repstat; 1006 mbuf_freem(nd->nd_mrep); 1007 return (error); 1008 } 1009 1010 /* 1011 * nfs getattr call with non-vnode arguemnts. 1012 */ 1013 APPLESTATIC int 1014 nfsrpc_getattrnovp(struct nfsmount *nmp, u_int8_t *fhp, int fhlen, int syscred, 1015 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, u_int64_t *xidp, 1016 uint32_t *leasep) 1017 { 1018 struct nfsrv_descript nfsd, *nd = &nfsd; 1019 int error, vers = NFS_VER2; 1020 nfsattrbit_t attrbits; 1021 1022 nfscl_reqstart(nd, NFSPROC_GETATTR, nmp, fhp, fhlen, NULL, NULL); 1023 if (nd->nd_flag & ND_NFSV4) { 1024 vers = NFS_VER4; 1025 NFSGETATTR_ATTRBIT(&attrbits); 1026 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_LEASETIME); 1027 (void) nfsrv_putattrbit(nd, &attrbits); 1028 } else if (nd->nd_flag & ND_NFSV3) { 1029 vers = NFS_VER3; 1030 } 1031 if (syscred) 1032 nd->nd_flag |= ND_USEGSSNAME; 1033 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 1034 NFS_PROG, vers, NULL, 1, xidp, NULL); 1035 if (error) 1036 return (error); 1037 if (nd->nd_repstat == 0) { 1038 if ((nd->nd_flag & ND_NFSV4) != 0) 1039 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, 1040 NULL, NULL, NULL, NULL, NULL, 0, NULL, leasep, NULL, 1041 NULL, NULL); 1042 else 1043 error = nfsm_loadattr(nd, nap); 1044 } else 1045 error = nd->nd_repstat; 1046 mbuf_freem(nd->nd_mrep); 1047 return (error); 1048 } 1049 1050 /* 1051 * Do an nfs setattr operation. 1052 */ 1053 APPLESTATIC int 1054 nfsrpc_setattr(vnode_t vp, struct vattr *vap, NFSACL_T *aclp, 1055 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *rnap, int *attrflagp, 1056 void *stuff) 1057 { 1058 int error, expireret = 0, openerr, retrycnt; 1059 u_int32_t clidrev = 0, mode; 1060 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1061 struct nfsfh *nfhp; 1062 nfsv4stateid_t stateid; 1063 void *lckp; 1064 1065 if (nmp->nm_clp != NULL) 1066 clidrev = nmp->nm_clp->nfsc_clientidrev; 1067 if (vap != NULL && NFSATTRISSET(u_quad_t, vap, va_size)) 1068 mode = NFSV4OPEN_ACCESSWRITE; 1069 else 1070 mode = NFSV4OPEN_ACCESSREAD; 1071 retrycnt = 0; 1072 do { 1073 lckp = NULL; 1074 openerr = 1; 1075 if (NFSHASNFSV4(nmp)) { 1076 nfhp = VTONFS(vp)->n_fhp; 1077 error = nfscl_getstateid(vp, nfhp->nfh_fh, 1078 nfhp->nfh_len, mode, 0, cred, p, &stateid, &lckp); 1079 if (error && vnode_vtype(vp) == VREG && 1080 (mode == NFSV4OPEN_ACCESSWRITE || 1081 nfstest_openallsetattr)) { 1082 /* 1083 * No Open stateid, so try and open the file 1084 * now. 1085 */ 1086 if (mode == NFSV4OPEN_ACCESSWRITE) 1087 openerr = nfsrpc_open(vp, FWRITE, cred, 1088 p); 1089 else 1090 openerr = nfsrpc_open(vp, FREAD, cred, 1091 p); 1092 if (!openerr) 1093 (void) nfscl_getstateid(vp, 1094 nfhp->nfh_fh, nfhp->nfh_len, 1095 mode, 0, cred, p, &stateid, &lckp); 1096 } 1097 } 1098 if (vap != NULL) 1099 error = nfsrpc_setattrrpc(vp, vap, &stateid, cred, p, 1100 rnap, attrflagp, stuff); 1101 else 1102 error = nfsrpc_setaclrpc(vp, cred, p, aclp, &stateid, 1103 stuff); 1104 if (error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION) 1105 nfscl_initiate_recovery(nmp->nm_clp); 1106 if (lckp != NULL) 1107 nfscl_lockderef(lckp); 1108 if (!openerr) 1109 (void) nfsrpc_close(vp, 0, p); 1110 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1111 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1112 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) { 1113 (void) nfs_catnap(PZERO, error, "nfs_setattr"); 1114 } else if ((error == NFSERR_EXPIRED || 1115 error == NFSERR_BADSTATEID) && clidrev != 0) { 1116 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1117 } 1118 retrycnt++; 1119 } while (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1120 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1121 error == NFSERR_BADSESSION || 1122 (error == NFSERR_OLDSTATEID && retrycnt < 20) || 1123 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1124 expireret == 0 && clidrev != 0 && retrycnt < 4)); 1125 if (error && retrycnt >= 4) 1126 error = EIO; 1127 return (error); 1128 } 1129 1130 static int 1131 nfsrpc_setattrrpc(vnode_t vp, struct vattr *vap, 1132 nfsv4stateid_t *stateidp, struct ucred *cred, NFSPROC_T *p, 1133 struct nfsvattr *rnap, int *attrflagp, void *stuff) 1134 { 1135 u_int32_t *tl; 1136 struct nfsrv_descript nfsd, *nd = &nfsd; 1137 int error; 1138 nfsattrbit_t attrbits; 1139 1140 *attrflagp = 0; 1141 NFSCL_REQSTART(nd, NFSPROC_SETATTR, vp); 1142 if (nd->nd_flag & ND_NFSV4) 1143 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 1144 vap->va_type = vnode_vtype(vp); 1145 nfscl_fillsattr(nd, vap, vp, NFSSATTR_FULL, 0); 1146 if (nd->nd_flag & ND_NFSV3) { 1147 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1148 *tl = newnfs_false; 1149 } else if (nd->nd_flag & ND_NFSV4) { 1150 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1151 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1152 NFSGETATTR_ATTRBIT(&attrbits); 1153 (void) nfsrv_putattrbit(nd, &attrbits); 1154 } 1155 error = nfscl_request(nd, vp, p, cred, stuff); 1156 if (error) 1157 return (error); 1158 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 1159 error = nfscl_wcc_data(nd, vp, rnap, attrflagp, NULL, stuff); 1160 if ((nd->nd_flag & ND_NFSV4) && !error) 1161 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 1162 if (!(nd->nd_flag & ND_NFSV3) && !nd->nd_repstat && !error) 1163 error = nfscl_postop_attr(nd, rnap, attrflagp, stuff); 1164 mbuf_freem(nd->nd_mrep); 1165 if (nd->nd_repstat && !error) 1166 error = nd->nd_repstat; 1167 return (error); 1168 } 1169 1170 /* 1171 * nfs lookup rpc 1172 */ 1173 APPLESTATIC int 1174 nfsrpc_lookup(vnode_t dvp, char *name, int len, struct ucred *cred, 1175 NFSPROC_T *p, struct nfsvattr *dnap, struct nfsvattr *nap, 1176 struct nfsfh **nfhpp, int *attrflagp, int *dattrflagp, void *stuff) 1177 { 1178 u_int32_t *tl; 1179 struct nfsrv_descript nfsd, *nd = &nfsd; 1180 struct nfsmount *nmp; 1181 struct nfsnode *np; 1182 struct nfsfh *nfhp; 1183 nfsattrbit_t attrbits; 1184 int error = 0, lookupp = 0; 1185 1186 *attrflagp = 0; 1187 *dattrflagp = 0; 1188 if (vnode_vtype(dvp) != VDIR) 1189 return (ENOTDIR); 1190 nmp = VFSTONFS(vnode_mount(dvp)); 1191 if (len > NFS_MAXNAMLEN) 1192 return (ENAMETOOLONG); 1193 if (NFSHASNFSV4(nmp) && len == 1 && 1194 name[0] == '.') { 1195 /* 1196 * Just return the current dir's fh. 1197 */ 1198 np = VTONFS(dvp); 1199 MALLOC(nfhp, struct nfsfh *, sizeof (struct nfsfh) + 1200 np->n_fhp->nfh_len, M_NFSFH, M_WAITOK); 1201 nfhp->nfh_len = np->n_fhp->nfh_len; 1202 NFSBCOPY(np->n_fhp->nfh_fh, nfhp->nfh_fh, nfhp->nfh_len); 1203 *nfhpp = nfhp; 1204 return (0); 1205 } 1206 if (NFSHASNFSV4(nmp) && len == 2 && 1207 name[0] == '.' && name[1] == '.') { 1208 lookupp = 1; 1209 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, dvp); 1210 } else { 1211 NFSCL_REQSTART(nd, NFSPROC_LOOKUP, dvp); 1212 (void) nfsm_strtom(nd, name, len); 1213 } 1214 if (nd->nd_flag & ND_NFSV4) { 1215 NFSGETATTR_ATTRBIT(&attrbits); 1216 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1217 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 1218 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1219 (void) nfsrv_putattrbit(nd, &attrbits); 1220 } 1221 error = nfscl_request(nd, dvp, p, cred, stuff); 1222 if (error) 1223 return (error); 1224 if (nd->nd_repstat) { 1225 /* 1226 * When an NFSv4 Lookupp returns ENOENT, it means that 1227 * the lookup is at the root of an fs, so return this dir. 1228 */ 1229 if (nd->nd_repstat == NFSERR_NOENT && lookupp) { 1230 np = VTONFS(dvp); 1231 MALLOC(nfhp, struct nfsfh *, sizeof (struct nfsfh) + 1232 np->n_fhp->nfh_len, M_NFSFH, M_WAITOK); 1233 nfhp->nfh_len = np->n_fhp->nfh_len; 1234 NFSBCOPY(np->n_fhp->nfh_fh, nfhp->nfh_fh, nfhp->nfh_len); 1235 *nfhpp = nfhp; 1236 mbuf_freem(nd->nd_mrep); 1237 return (0); 1238 } 1239 if (nd->nd_flag & ND_NFSV3) 1240 error = nfscl_postop_attr(nd, dnap, dattrflagp, stuff); 1241 else if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == 1242 ND_NFSV4) { 1243 /* Load the directory attributes. */ 1244 error = nfsm_loadattr(nd, dnap); 1245 if (error == 0) 1246 *dattrflagp = 1; 1247 } 1248 goto nfsmout; 1249 } 1250 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) { 1251 /* Load the directory attributes. */ 1252 error = nfsm_loadattr(nd, dnap); 1253 if (error != 0) 1254 goto nfsmout; 1255 *dattrflagp = 1; 1256 /* Skip over the Lookup and GetFH operation status values. */ 1257 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 1258 } 1259 error = nfsm_getfh(nd, nfhpp); 1260 if (error) 1261 goto nfsmout; 1262 1263 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1264 if ((nd->nd_flag & ND_NFSV3) && !error) 1265 error = nfscl_postop_attr(nd, dnap, dattrflagp, stuff); 1266 nfsmout: 1267 mbuf_freem(nd->nd_mrep); 1268 if (!error && nd->nd_repstat) 1269 error = nd->nd_repstat; 1270 return (error); 1271 } 1272 1273 /* 1274 * Do a readlink rpc. 1275 */ 1276 APPLESTATIC int 1277 nfsrpc_readlink(vnode_t vp, struct uio *uiop, struct ucred *cred, 1278 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 1279 { 1280 u_int32_t *tl; 1281 struct nfsrv_descript nfsd, *nd = &nfsd; 1282 struct nfsnode *np = VTONFS(vp); 1283 nfsattrbit_t attrbits; 1284 int error, len, cangetattr = 1; 1285 1286 *attrflagp = 0; 1287 NFSCL_REQSTART(nd, NFSPROC_READLINK, vp); 1288 if (nd->nd_flag & ND_NFSV4) { 1289 /* 1290 * And do a Getattr op. 1291 */ 1292 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1293 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1294 NFSGETATTR_ATTRBIT(&attrbits); 1295 (void) nfsrv_putattrbit(nd, &attrbits); 1296 } 1297 error = nfscl_request(nd, vp, p, cred, stuff); 1298 if (error) 1299 return (error); 1300 if (nd->nd_flag & ND_NFSV3) 1301 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1302 if (!nd->nd_repstat && !error) { 1303 NFSM_STRSIZ(len, NFS_MAXPATHLEN); 1304 /* 1305 * This seems weird to me, but must have been added to 1306 * FreeBSD for some reason. The only thing I can think of 1307 * is that there was/is some server that replies with 1308 * more link data than it should? 1309 */ 1310 if (len == NFS_MAXPATHLEN) { 1311 NFSLOCKNODE(np); 1312 if (np->n_size > 0 && np->n_size < NFS_MAXPATHLEN) { 1313 len = np->n_size; 1314 cangetattr = 0; 1315 } 1316 NFSUNLOCKNODE(np); 1317 } 1318 error = nfsm_mbufuio(nd, uiop, len); 1319 if ((nd->nd_flag & ND_NFSV4) && !error && cangetattr) 1320 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1321 } 1322 if (nd->nd_repstat && !error) 1323 error = nd->nd_repstat; 1324 nfsmout: 1325 mbuf_freem(nd->nd_mrep); 1326 return (error); 1327 } 1328 1329 /* 1330 * Read operation. 1331 */ 1332 APPLESTATIC int 1333 nfsrpc_read(vnode_t vp, struct uio *uiop, struct ucred *cred, 1334 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 1335 { 1336 int error, expireret = 0, retrycnt; 1337 u_int32_t clidrev = 0; 1338 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1339 struct nfsnode *np = VTONFS(vp); 1340 struct ucred *newcred; 1341 struct nfsfh *nfhp = NULL; 1342 nfsv4stateid_t stateid; 1343 void *lckp; 1344 1345 if (nmp->nm_clp != NULL) 1346 clidrev = nmp->nm_clp->nfsc_clientidrev; 1347 newcred = cred; 1348 if (NFSHASNFSV4(nmp)) { 1349 nfhp = np->n_fhp; 1350 newcred = NFSNEWCRED(cred); 1351 } 1352 retrycnt = 0; 1353 do { 1354 lckp = NULL; 1355 if (NFSHASNFSV4(nmp)) 1356 (void)nfscl_getstateid(vp, nfhp->nfh_fh, nfhp->nfh_len, 1357 NFSV4OPEN_ACCESSREAD, 0, newcred, p, &stateid, 1358 &lckp); 1359 error = nfsrpc_readrpc(vp, uiop, newcred, &stateid, p, nap, 1360 attrflagp, stuff); 1361 if (error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION) 1362 nfscl_initiate_recovery(nmp->nm_clp); 1363 if (lckp != NULL) 1364 nfscl_lockderef(lckp); 1365 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1366 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1367 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) { 1368 (void) nfs_catnap(PZERO, error, "nfs_read"); 1369 } else if ((error == NFSERR_EXPIRED || 1370 error == NFSERR_BADSTATEID) && clidrev != 0) { 1371 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1372 } 1373 retrycnt++; 1374 } while (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1375 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1376 error == NFSERR_BADSESSION || 1377 (error == NFSERR_OLDSTATEID && retrycnt < 20) || 1378 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1379 expireret == 0 && clidrev != 0 && retrycnt < 4)); 1380 if (error && retrycnt >= 4) 1381 error = EIO; 1382 if (NFSHASNFSV4(nmp)) 1383 NFSFREECRED(newcred); 1384 return (error); 1385 } 1386 1387 /* 1388 * The actual read RPC. 1389 */ 1390 static int 1391 nfsrpc_readrpc(vnode_t vp, struct uio *uiop, struct ucred *cred, 1392 nfsv4stateid_t *stateidp, NFSPROC_T *p, struct nfsvattr *nap, 1393 int *attrflagp, void *stuff) 1394 { 1395 u_int32_t *tl; 1396 int error = 0, len, retlen, tsiz, eof = 0; 1397 struct nfsrv_descript nfsd; 1398 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1399 struct nfsrv_descript *nd = &nfsd; 1400 int rsize; 1401 off_t tmp_off; 1402 1403 *attrflagp = 0; 1404 tsiz = uio_uio_resid(uiop); 1405 tmp_off = uiop->uio_offset + tsiz; 1406 NFSLOCKMNT(nmp); 1407 if (tmp_off > nmp->nm_maxfilesize || tmp_off < uiop->uio_offset) { 1408 NFSUNLOCKMNT(nmp); 1409 return (EFBIG); 1410 } 1411 rsize = nmp->nm_rsize; 1412 NFSUNLOCKMNT(nmp); 1413 nd->nd_mrep = NULL; 1414 while (tsiz > 0) { 1415 *attrflagp = 0; 1416 len = (tsiz > rsize) ? rsize : tsiz; 1417 NFSCL_REQSTART(nd, NFSPROC_READ, vp); 1418 if (nd->nd_flag & ND_NFSV4) 1419 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 1420 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED * 3); 1421 if (nd->nd_flag & ND_NFSV2) { 1422 *tl++ = txdr_unsigned(uiop->uio_offset); 1423 *tl++ = txdr_unsigned(len); 1424 *tl = 0; 1425 } else { 1426 txdr_hyper(uiop->uio_offset, tl); 1427 *(tl + 2) = txdr_unsigned(len); 1428 } 1429 /* 1430 * Since I can't do a Getattr for NFSv4 for Write, there 1431 * doesn't seem any point in doing one here, either. 1432 * (See the comment in nfsrpc_writerpc() for more info.) 1433 */ 1434 error = nfscl_request(nd, vp, p, cred, stuff); 1435 if (error) 1436 return (error); 1437 if (nd->nd_flag & ND_NFSV3) { 1438 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1439 } else if (!nd->nd_repstat && (nd->nd_flag & ND_NFSV2)) { 1440 error = nfsm_loadattr(nd, nap); 1441 if (!error) 1442 *attrflagp = 1; 1443 } 1444 if (nd->nd_repstat || error) { 1445 if (!error) 1446 error = nd->nd_repstat; 1447 goto nfsmout; 1448 } 1449 if (nd->nd_flag & ND_NFSV3) { 1450 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1451 eof = fxdr_unsigned(int, *(tl + 1)); 1452 } else if (nd->nd_flag & ND_NFSV4) { 1453 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 1454 eof = fxdr_unsigned(int, *tl); 1455 } 1456 NFSM_STRSIZ(retlen, len); 1457 error = nfsm_mbufuio(nd, uiop, retlen); 1458 if (error) 1459 goto nfsmout; 1460 mbuf_freem(nd->nd_mrep); 1461 nd->nd_mrep = NULL; 1462 tsiz -= retlen; 1463 if (!(nd->nd_flag & ND_NFSV2)) { 1464 if (eof || retlen == 0) 1465 tsiz = 0; 1466 } else if (retlen < len) 1467 tsiz = 0; 1468 } 1469 return (0); 1470 nfsmout: 1471 if (nd->nd_mrep != NULL) 1472 mbuf_freem(nd->nd_mrep); 1473 return (error); 1474 } 1475 1476 /* 1477 * nfs write operation 1478 * When called_from_strategy != 0, it should return EIO for an error that 1479 * indicates recovery is in progress, so that the buffer will be left 1480 * dirty and be written back to the server later. If it loops around, 1481 * the recovery thread could get stuck waiting for the buffer and recovery 1482 * will then deadlock. 1483 */ 1484 APPLESTATIC int 1485 nfsrpc_write(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 1486 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 1487 void *stuff, int called_from_strategy) 1488 { 1489 int error, expireret = 0, retrycnt, nostateid; 1490 u_int32_t clidrev = 0; 1491 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1492 struct nfsnode *np = VTONFS(vp); 1493 struct ucred *newcred; 1494 struct nfsfh *nfhp = NULL; 1495 nfsv4stateid_t stateid; 1496 void *lckp; 1497 1498 *must_commit = 0; 1499 if (nmp->nm_clp != NULL) 1500 clidrev = nmp->nm_clp->nfsc_clientidrev; 1501 newcred = cred; 1502 if (NFSHASNFSV4(nmp)) { 1503 newcred = NFSNEWCRED(cred); 1504 nfhp = np->n_fhp; 1505 } 1506 retrycnt = 0; 1507 do { 1508 lckp = NULL; 1509 nostateid = 0; 1510 if (NFSHASNFSV4(nmp)) { 1511 (void)nfscl_getstateid(vp, nfhp->nfh_fh, nfhp->nfh_len, 1512 NFSV4OPEN_ACCESSWRITE, 0, newcred, p, &stateid, 1513 &lckp); 1514 if (stateid.other[0] == 0 && stateid.other[1] == 0 && 1515 stateid.other[2] == 0) { 1516 nostateid = 1; 1517 NFSCL_DEBUG(1, "stateid0 in write\n"); 1518 } 1519 } 1520 1521 /* 1522 * If there is no stateid for NFSv4, it means this is an 1523 * extraneous write after close. Basically a poorly 1524 * implemented buffer cache. Just don't do the write. 1525 */ 1526 if (nostateid) 1527 error = 0; 1528 else 1529 error = nfsrpc_writerpc(vp, uiop, iomode, must_commit, 1530 newcred, &stateid, p, nap, attrflagp, stuff); 1531 if (error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION) 1532 nfscl_initiate_recovery(nmp->nm_clp); 1533 if (lckp != NULL) 1534 nfscl_lockderef(lckp); 1535 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1536 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1537 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) { 1538 (void) nfs_catnap(PZERO, error, "nfs_write"); 1539 } else if ((error == NFSERR_EXPIRED || 1540 error == NFSERR_BADSTATEID) && clidrev != 0) { 1541 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1542 } 1543 retrycnt++; 1544 } while (error == NFSERR_GRACE || error == NFSERR_DELAY || 1545 ((error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION || 1546 error == NFSERR_STALEDONTRECOVER) && called_from_strategy == 0) || 1547 (error == NFSERR_OLDSTATEID && retrycnt < 20) || 1548 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1549 expireret == 0 && clidrev != 0 && retrycnt < 4)); 1550 if (error != 0 && (retrycnt >= 4 || 1551 ((error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION || 1552 error == NFSERR_STALEDONTRECOVER) && called_from_strategy != 0))) 1553 error = EIO; 1554 if (NFSHASNFSV4(nmp)) 1555 NFSFREECRED(newcred); 1556 return (error); 1557 } 1558 1559 /* 1560 * The actual write RPC. 1561 */ 1562 static int 1563 nfsrpc_writerpc(vnode_t vp, struct uio *uiop, int *iomode, 1564 int *must_commit, struct ucred *cred, nfsv4stateid_t *stateidp, 1565 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 1566 { 1567 u_int32_t *tl; 1568 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1569 struct nfsnode *np = VTONFS(vp); 1570 int error = 0, len, tsiz, rlen, commit, committed = NFSWRITE_FILESYNC; 1571 int wccflag = 0, wsize; 1572 int32_t backup; 1573 struct nfsrv_descript nfsd; 1574 struct nfsrv_descript *nd = &nfsd; 1575 nfsattrbit_t attrbits; 1576 off_t tmp_off; 1577 1578 KASSERT(uiop->uio_iovcnt == 1, ("nfs: writerpc iovcnt > 1")); 1579 *attrflagp = 0; 1580 tsiz = uio_uio_resid(uiop); 1581 tmp_off = uiop->uio_offset + tsiz; 1582 NFSLOCKMNT(nmp); 1583 if (tmp_off > nmp->nm_maxfilesize || tmp_off < uiop->uio_offset) { 1584 NFSUNLOCKMNT(nmp); 1585 return (EFBIG); 1586 } 1587 wsize = nmp->nm_wsize; 1588 NFSUNLOCKMNT(nmp); 1589 nd->nd_mrep = NULL; /* NFSv2 sometimes does a write with */ 1590 nd->nd_repstat = 0; /* uio_resid == 0, so the while is not done */ 1591 while (tsiz > 0) { 1592 *attrflagp = 0; 1593 len = (tsiz > wsize) ? wsize : tsiz; 1594 NFSCL_REQSTART(nd, NFSPROC_WRITE, vp); 1595 if (nd->nd_flag & ND_NFSV4) { 1596 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 1597 NFSM_BUILD(tl, u_int32_t *, NFSX_HYPER+2*NFSX_UNSIGNED); 1598 txdr_hyper(uiop->uio_offset, tl); 1599 tl += 2; 1600 *tl++ = txdr_unsigned(*iomode); 1601 *tl = txdr_unsigned(len); 1602 } else if (nd->nd_flag & ND_NFSV3) { 1603 NFSM_BUILD(tl, u_int32_t *, NFSX_HYPER+3*NFSX_UNSIGNED); 1604 txdr_hyper(uiop->uio_offset, tl); 1605 tl += 2; 1606 *tl++ = txdr_unsigned(len); 1607 *tl++ = txdr_unsigned(*iomode); 1608 *tl = txdr_unsigned(len); 1609 } else { 1610 u_int32_t x; 1611 1612 NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 1613 /* 1614 * Not sure why someone changed this, since the 1615 * RFC clearly states that "beginoffset" and 1616 * "totalcount" are ignored, but it wouldn't 1617 * surprise me if there's a busted server out there. 1618 */ 1619 /* Set both "begin" and "current" to non-garbage. */ 1620 x = txdr_unsigned((u_int32_t)uiop->uio_offset); 1621 *tl++ = x; /* "begin offset" */ 1622 *tl++ = x; /* "current offset" */ 1623 x = txdr_unsigned(len); 1624 *tl++ = x; /* total to this offset */ 1625 *tl = x; /* size of this write */ 1626 1627 } 1628 nfsm_uiombuf(nd, uiop, len); 1629 /* 1630 * Although it is tempting to do a normal Getattr Op in the 1631 * NFSv4 compound, the result can be a nearly hung client 1632 * system if the Getattr asks for Owner and/or OwnerGroup. 1633 * It occurs when the client can't map either the Owner or 1634 * Owner_group name in the Getattr reply to a uid/gid. When 1635 * there is a cache miss, the kernel does an upcall to the 1636 * nfsuserd. Then, it can try and read the local /etc/passwd 1637 * or /etc/group file. It can then block in getnewbuf(), 1638 * waiting for dirty writes to be pushed to the NFS server. 1639 * The only reason this doesn't result in a complete 1640 * deadlock, is that the upcall times out and allows 1641 * the write to complete. However, progress is so slow 1642 * that it might just as well be deadlocked. 1643 * As such, we get the rest of the attributes, but not 1644 * Owner or Owner_group. 1645 * nb: nfscl_loadattrcache() needs to be told that these 1646 * partial attributes from a write rpc are being 1647 * passed in, via a argument flag. 1648 */ 1649 if (nd->nd_flag & ND_NFSV4) { 1650 NFSWRITEGETATTR_ATTRBIT(&attrbits); 1651 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1652 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1653 (void) nfsrv_putattrbit(nd, &attrbits); 1654 } 1655 error = nfscl_request(nd, vp, p, cred, stuff); 1656 if (error) 1657 return (error); 1658 if (nd->nd_repstat) { 1659 /* 1660 * In case the rpc gets retried, roll 1661 * the uio fileds changed by nfsm_uiombuf() 1662 * back. 1663 */ 1664 uiop->uio_offset -= len; 1665 uio_uio_resid_add(uiop, len); 1666 uio_iov_base_add(uiop, -len); 1667 uio_iov_len_add(uiop, len); 1668 } 1669 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 1670 error = nfscl_wcc_data(nd, vp, nap, attrflagp, 1671 &wccflag, stuff); 1672 if (error) 1673 goto nfsmout; 1674 } 1675 if (!nd->nd_repstat) { 1676 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 1677 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED 1678 + NFSX_VERF); 1679 rlen = fxdr_unsigned(int, *tl++); 1680 if (rlen == 0) { 1681 error = NFSERR_IO; 1682 goto nfsmout; 1683 } else if (rlen < len) { 1684 backup = len - rlen; 1685 uio_iov_base_add(uiop, -(backup)); 1686 uio_iov_len_add(uiop, backup); 1687 uiop->uio_offset -= backup; 1688 uio_uio_resid_add(uiop, backup); 1689 len = rlen; 1690 } 1691 commit = fxdr_unsigned(int, *tl++); 1692 1693 /* 1694 * Return the lowest committment level 1695 * obtained by any of the RPCs. 1696 */ 1697 if (committed == NFSWRITE_FILESYNC) 1698 committed = commit; 1699 else if (committed == NFSWRITE_DATASYNC && 1700 commit == NFSWRITE_UNSTABLE) 1701 committed = commit; 1702 NFSLOCKMNT(nmp); 1703 if (!NFSHASWRITEVERF(nmp)) { 1704 NFSBCOPY((caddr_t)tl, 1705 (caddr_t)&nmp->nm_verf[0], 1706 NFSX_VERF); 1707 NFSSETWRITEVERF(nmp); 1708 } else if (NFSBCMP(tl, nmp->nm_verf, 1709 NFSX_VERF)) { 1710 *must_commit = 1; 1711 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 1712 } 1713 NFSUNLOCKMNT(nmp); 1714 } 1715 if (nd->nd_flag & ND_NFSV4) 1716 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1717 if (nd->nd_flag & (ND_NFSV2 | ND_NFSV4)) { 1718 error = nfsm_loadattr(nd, nap); 1719 if (!error) 1720 *attrflagp = NFS_LATTR_NOSHRINK; 1721 } 1722 } else { 1723 error = nd->nd_repstat; 1724 } 1725 if (error) 1726 goto nfsmout; 1727 NFSWRITERPC_SETTIME(wccflag, np, (nd->nd_flag & ND_NFSV4)); 1728 mbuf_freem(nd->nd_mrep); 1729 nd->nd_mrep = NULL; 1730 tsiz -= len; 1731 } 1732 nfsmout: 1733 if (nd->nd_mrep != NULL) 1734 mbuf_freem(nd->nd_mrep); 1735 *iomode = committed; 1736 if (nd->nd_repstat && !error) 1737 error = nd->nd_repstat; 1738 return (error); 1739 } 1740 1741 /* 1742 * nfs mknod rpc 1743 * For NFS v2 this is a kludge. Use a create rpc but with the IFMT bits of the 1744 * mode set to specify the file type and the size field for rdev. 1745 */ 1746 APPLESTATIC int 1747 nfsrpc_mknod(vnode_t dvp, char *name, int namelen, struct vattr *vap, 1748 u_int32_t rdev, enum vtype vtyp, struct ucred *cred, NFSPROC_T *p, 1749 struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp, 1750 int *attrflagp, int *dattrflagp, void *dstuff) 1751 { 1752 u_int32_t *tl; 1753 int error = 0; 1754 struct nfsrv_descript nfsd, *nd = &nfsd; 1755 nfsattrbit_t attrbits; 1756 1757 *nfhpp = NULL; 1758 *attrflagp = 0; 1759 *dattrflagp = 0; 1760 if (namelen > NFS_MAXNAMLEN) 1761 return (ENAMETOOLONG); 1762 NFSCL_REQSTART(nd, NFSPROC_MKNOD, dvp); 1763 if (nd->nd_flag & ND_NFSV4) { 1764 if (vtyp == VBLK || vtyp == VCHR) { 1765 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 1766 *tl++ = vtonfsv34_type(vtyp); 1767 *tl++ = txdr_unsigned(NFSMAJOR(rdev)); 1768 *tl = txdr_unsigned(NFSMINOR(rdev)); 1769 } else { 1770 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1771 *tl = vtonfsv34_type(vtyp); 1772 } 1773 } 1774 (void) nfsm_strtom(nd, name, namelen); 1775 if (nd->nd_flag & ND_NFSV3) { 1776 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1777 *tl = vtonfsv34_type(vtyp); 1778 } 1779 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 1780 nfscl_fillsattr(nd, vap, dvp, 0, 0); 1781 if ((nd->nd_flag & ND_NFSV3) && 1782 (vtyp == VCHR || vtyp == VBLK)) { 1783 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1784 *tl++ = txdr_unsigned(NFSMAJOR(rdev)); 1785 *tl = txdr_unsigned(NFSMINOR(rdev)); 1786 } 1787 if (nd->nd_flag & ND_NFSV4) { 1788 NFSGETATTR_ATTRBIT(&attrbits); 1789 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1790 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 1791 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1792 (void) nfsrv_putattrbit(nd, &attrbits); 1793 } 1794 if (nd->nd_flag & ND_NFSV2) 1795 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZERDEV, rdev); 1796 error = nfscl_request(nd, dvp, p, cred, dstuff); 1797 if (error) 1798 return (error); 1799 if (nd->nd_flag & ND_NFSV4) 1800 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 1801 if (!nd->nd_repstat) { 1802 if (nd->nd_flag & ND_NFSV4) { 1803 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 1804 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 1805 if (error) 1806 goto nfsmout; 1807 } 1808 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 1809 if (error) 1810 goto nfsmout; 1811 } 1812 if (nd->nd_flag & ND_NFSV3) 1813 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 1814 if (!error && nd->nd_repstat) 1815 error = nd->nd_repstat; 1816 nfsmout: 1817 mbuf_freem(nd->nd_mrep); 1818 return (error); 1819 } 1820 1821 /* 1822 * nfs file create call 1823 * Mostly just call the approriate routine. (I separated out v4, so that 1824 * error recovery wouldn't be as difficult.) 1825 */ 1826 APPLESTATIC int 1827 nfsrpc_create(vnode_t dvp, char *name, int namelen, struct vattr *vap, 1828 nfsquad_t cverf, int fmode, struct ucred *cred, NFSPROC_T *p, 1829 struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp, 1830 int *attrflagp, int *dattrflagp, void *dstuff) 1831 { 1832 int error = 0, newone, expireret = 0, retrycnt, unlocked; 1833 struct nfsclowner *owp; 1834 struct nfscldeleg *dp; 1835 struct nfsmount *nmp = VFSTONFS(vnode_mount(dvp)); 1836 u_int32_t clidrev; 1837 1838 if (NFSHASNFSV4(nmp)) { 1839 retrycnt = 0; 1840 do { 1841 dp = NULL; 1842 error = nfscl_open(dvp, NULL, 0, (NFSV4OPEN_ACCESSWRITE | 1843 NFSV4OPEN_ACCESSREAD), 0, cred, p, &owp, NULL, &newone, 1844 NULL, 1); 1845 if (error) 1846 return (error); 1847 if (nmp->nm_clp != NULL) 1848 clidrev = nmp->nm_clp->nfsc_clientidrev; 1849 else 1850 clidrev = 0; 1851 error = nfsrpc_createv4(dvp, name, namelen, vap, cverf, fmode, 1852 owp, &dp, cred, p, dnap, nnap, nfhpp, attrflagp, dattrflagp, 1853 dstuff, &unlocked); 1854 /* 1855 * There is no need to invalidate cached attributes here, 1856 * since new post-delegation issue attributes are always 1857 * returned by nfsrpc_createv4() and these will update the 1858 * attribute cache. 1859 */ 1860 if (dp != NULL) 1861 (void) nfscl_deleg(nmp->nm_mountp, owp->nfsow_clp, 1862 (*nfhpp)->nfh_fh, (*nfhpp)->nfh_len, cred, p, &dp); 1863 nfscl_ownerrelease(owp, error, newone, unlocked); 1864 if (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID || 1865 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1866 error == NFSERR_BADSESSION) { 1867 (void) nfs_catnap(PZERO, error, "nfs_open"); 1868 } else if ((error == NFSERR_EXPIRED || 1869 error == NFSERR_BADSTATEID) && clidrev != 0) { 1870 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1871 retrycnt++; 1872 } 1873 } while (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID || 1874 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1875 error == NFSERR_BADSESSION || 1876 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1877 expireret == 0 && clidrev != 0 && retrycnt < 4)); 1878 if (error && retrycnt >= 4) 1879 error = EIO; 1880 } else { 1881 error = nfsrpc_createv23(dvp, name, namelen, vap, cverf, 1882 fmode, cred, p, dnap, nnap, nfhpp, attrflagp, dattrflagp, 1883 dstuff); 1884 } 1885 return (error); 1886 } 1887 1888 /* 1889 * The create rpc for v2 and 3. 1890 */ 1891 static int 1892 nfsrpc_createv23(vnode_t dvp, char *name, int namelen, struct vattr *vap, 1893 nfsquad_t cverf, int fmode, struct ucred *cred, NFSPROC_T *p, 1894 struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp, 1895 int *attrflagp, int *dattrflagp, void *dstuff) 1896 { 1897 u_int32_t *tl; 1898 int error = 0; 1899 struct nfsrv_descript nfsd, *nd = &nfsd; 1900 1901 *nfhpp = NULL; 1902 *attrflagp = 0; 1903 *dattrflagp = 0; 1904 if (namelen > NFS_MAXNAMLEN) 1905 return (ENAMETOOLONG); 1906 NFSCL_REQSTART(nd, NFSPROC_CREATE, dvp); 1907 (void) nfsm_strtom(nd, name, namelen); 1908 if (nd->nd_flag & ND_NFSV3) { 1909 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1910 if (fmode & O_EXCL) { 1911 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE); 1912 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 1913 *tl++ = cverf.lval[0]; 1914 *tl = cverf.lval[1]; 1915 } else { 1916 *tl = txdr_unsigned(NFSCREATE_UNCHECKED); 1917 nfscl_fillsattr(nd, vap, dvp, 0, 0); 1918 } 1919 } else { 1920 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZE0, 0); 1921 } 1922 error = nfscl_request(nd, dvp, p, cred, dstuff); 1923 if (error) 1924 return (error); 1925 if (nd->nd_repstat == 0) { 1926 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 1927 if (error) 1928 goto nfsmout; 1929 } 1930 if (nd->nd_flag & ND_NFSV3) 1931 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 1932 if (nd->nd_repstat != 0 && error == 0) 1933 error = nd->nd_repstat; 1934 nfsmout: 1935 mbuf_freem(nd->nd_mrep); 1936 return (error); 1937 } 1938 1939 static int 1940 nfsrpc_createv4(vnode_t dvp, char *name, int namelen, struct vattr *vap, 1941 nfsquad_t cverf, int fmode, struct nfsclowner *owp, struct nfscldeleg **dpp, 1942 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 1943 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp, 1944 int *dattrflagp, void *dstuff, int *unlockedp) 1945 { 1946 u_int32_t *tl; 1947 int error = 0, deleg, newone, ret, acesize, limitby; 1948 struct nfsrv_descript nfsd, *nd = &nfsd; 1949 struct nfsclopen *op; 1950 struct nfscldeleg *dp = NULL; 1951 struct nfsnode *np; 1952 struct nfsfh *nfhp; 1953 nfsattrbit_t attrbits; 1954 nfsv4stateid_t stateid; 1955 u_int32_t rflags; 1956 struct nfsmount *nmp; 1957 1958 nmp = VFSTONFS(dvp->v_mount); 1959 np = VTONFS(dvp); 1960 *unlockedp = 0; 1961 *nfhpp = NULL; 1962 *dpp = NULL; 1963 *attrflagp = 0; 1964 *dattrflagp = 0; 1965 if (namelen > NFS_MAXNAMLEN) 1966 return (ENAMETOOLONG); 1967 NFSCL_REQSTART(nd, NFSPROC_CREATE, dvp); 1968 /* 1969 * For V4, this is actually an Open op. 1970 */ 1971 NFSM_BUILD(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 1972 *tl++ = txdr_unsigned(owp->nfsow_seqid); 1973 *tl++ = txdr_unsigned(NFSV4OPEN_ACCESSWRITE | 1974 NFSV4OPEN_ACCESSREAD); 1975 *tl++ = txdr_unsigned(NFSV4OPEN_DENYNONE); 1976 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0]; 1977 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1]; 1978 (void) nfsm_strtom(nd, owp->nfsow_owner, NFSV4CL_LOCKNAMELEN); 1979 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1980 *tl++ = txdr_unsigned(NFSV4OPEN_CREATE); 1981 if (fmode & O_EXCL) { 1982 if (NFSHASNFSV4N(nmp)) { 1983 if (NFSHASSESSPERSIST(nmp)) { 1984 /* Use GUARDED for persistent sessions. */ 1985 *tl = txdr_unsigned(NFSCREATE_GUARDED); 1986 nfscl_fillsattr(nd, vap, dvp, 0, 0); 1987 } else { 1988 /* Otherwise, use EXCLUSIVE4_1. */ 1989 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE41); 1990 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 1991 *tl++ = cverf.lval[0]; 1992 *tl = cverf.lval[1]; 1993 nfscl_fillsattr(nd, vap, dvp, 0, 0); 1994 } 1995 } else { 1996 /* NFSv4.0 */ 1997 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE); 1998 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 1999 *tl++ = cverf.lval[0]; 2000 *tl = cverf.lval[1]; 2001 } 2002 } else { 2003 *tl = txdr_unsigned(NFSCREATE_UNCHECKED); 2004 nfscl_fillsattr(nd, vap, dvp, 0, 0); 2005 } 2006 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2007 *tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL); 2008 (void) nfsm_strtom(nd, name, namelen); 2009 /* Get the new file's handle and attributes. */ 2010 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2011 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 2012 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2013 NFSGETATTR_ATTRBIT(&attrbits); 2014 (void) nfsrv_putattrbit(nd, &attrbits); 2015 /* Get the directory's post-op attributes. */ 2016 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2017 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2018 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, np->n_fhp->nfh_len, 0); 2019 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2020 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2021 (void) nfsrv_putattrbit(nd, &attrbits); 2022 error = nfscl_request(nd, dvp, p, cred, dstuff); 2023 if (error) 2024 return (error); 2025 NFSCL_INCRSEQID(owp->nfsow_seqid, nd); 2026 if (nd->nd_repstat == 0) { 2027 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 2028 6 * NFSX_UNSIGNED); 2029 stateid.seqid = *tl++; 2030 stateid.other[0] = *tl++; 2031 stateid.other[1] = *tl++; 2032 stateid.other[2] = *tl; 2033 rflags = fxdr_unsigned(u_int32_t, *(tl + 6)); 2034 (void) nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 2035 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2036 deleg = fxdr_unsigned(int, *tl); 2037 if (deleg == NFSV4OPEN_DELEGATEREAD || 2038 deleg == NFSV4OPEN_DELEGATEWRITE) { 2039 if (!(owp->nfsow_clp->nfsc_flags & 2040 NFSCLFLAGS_FIRSTDELEG)) 2041 owp->nfsow_clp->nfsc_flags |= 2042 (NFSCLFLAGS_FIRSTDELEG | NFSCLFLAGS_GOTDELEG); 2043 MALLOC(dp, struct nfscldeleg *, 2044 sizeof (struct nfscldeleg) + NFSX_V4FHMAX, 2045 M_NFSCLDELEG, M_WAITOK); 2046 LIST_INIT(&dp->nfsdl_owner); 2047 LIST_INIT(&dp->nfsdl_lock); 2048 dp->nfsdl_clp = owp->nfsow_clp; 2049 newnfs_copyincred(cred, &dp->nfsdl_cred); 2050 nfscl_lockinit(&dp->nfsdl_rwlock); 2051 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 2052 NFSX_UNSIGNED); 2053 dp->nfsdl_stateid.seqid = *tl++; 2054 dp->nfsdl_stateid.other[0] = *tl++; 2055 dp->nfsdl_stateid.other[1] = *tl++; 2056 dp->nfsdl_stateid.other[2] = *tl++; 2057 ret = fxdr_unsigned(int, *tl); 2058 if (deleg == NFSV4OPEN_DELEGATEWRITE) { 2059 dp->nfsdl_flags = NFSCLDL_WRITE; 2060 /* 2061 * Indicates how much the file can grow. 2062 */ 2063 NFSM_DISSECT(tl, u_int32_t *, 2064 3 * NFSX_UNSIGNED); 2065 limitby = fxdr_unsigned(int, *tl++); 2066 switch (limitby) { 2067 case NFSV4OPEN_LIMITSIZE: 2068 dp->nfsdl_sizelimit = fxdr_hyper(tl); 2069 break; 2070 case NFSV4OPEN_LIMITBLOCKS: 2071 dp->nfsdl_sizelimit = 2072 fxdr_unsigned(u_int64_t, *tl++); 2073 dp->nfsdl_sizelimit *= 2074 fxdr_unsigned(u_int64_t, *tl); 2075 break; 2076 default: 2077 error = NFSERR_BADXDR; 2078 goto nfsmout; 2079 }; 2080 } else { 2081 dp->nfsdl_flags = NFSCLDL_READ; 2082 } 2083 if (ret) 2084 dp->nfsdl_flags |= NFSCLDL_RECALL; 2085 error = nfsrv_dissectace(nd, &dp->nfsdl_ace, &ret, 2086 &acesize, p); 2087 if (error) 2088 goto nfsmout; 2089 } else if (deleg != NFSV4OPEN_DELEGATENONE) { 2090 error = NFSERR_BADXDR; 2091 goto nfsmout; 2092 } 2093 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 2094 if (error) 2095 goto nfsmout; 2096 /* Get rid of the PutFH and Getattr status values. */ 2097 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 2098 /* Load the directory attributes. */ 2099 error = nfsm_loadattr(nd, dnap); 2100 if (error) 2101 goto nfsmout; 2102 *dattrflagp = 1; 2103 if (dp != NULL && *attrflagp) { 2104 dp->nfsdl_change = nnap->na_filerev; 2105 dp->nfsdl_modtime = nnap->na_mtime; 2106 dp->nfsdl_flags |= NFSCLDL_MODTIMESET; 2107 } 2108 /* 2109 * We can now complete the Open state. 2110 */ 2111 nfhp = *nfhpp; 2112 if (dp != NULL) { 2113 dp->nfsdl_fhlen = nfhp->nfh_len; 2114 NFSBCOPY(nfhp->nfh_fh, dp->nfsdl_fh, nfhp->nfh_len); 2115 } 2116 /* 2117 * Get an Open structure that will be 2118 * attached to the OpenOwner, acquired already. 2119 */ 2120 error = nfscl_open(dvp, nfhp->nfh_fh, nfhp->nfh_len, 2121 (NFSV4OPEN_ACCESSWRITE | NFSV4OPEN_ACCESSREAD), 0, 2122 cred, p, NULL, &op, &newone, NULL, 0); 2123 if (error) 2124 goto nfsmout; 2125 op->nfso_stateid = stateid; 2126 newnfs_copyincred(cred, &op->nfso_cred); 2127 if ((rflags & NFSV4OPEN_RESULTCONFIRM)) { 2128 do { 2129 ret = nfsrpc_openconfirm(dvp, nfhp->nfh_fh, 2130 nfhp->nfh_len, op, cred, p); 2131 if (ret == NFSERR_DELAY) 2132 (void) nfs_catnap(PZERO, ret, "nfs_create"); 2133 } while (ret == NFSERR_DELAY); 2134 error = ret; 2135 } 2136 2137 /* 2138 * If the server is handing out delegations, but we didn't 2139 * get one because an OpenConfirm was required, try the 2140 * Open again, to get a delegation. This is a harmless no-op, 2141 * from a server's point of view. 2142 */ 2143 if ((rflags & NFSV4OPEN_RESULTCONFIRM) && 2144 (owp->nfsow_clp->nfsc_flags & NFSCLFLAGS_GOTDELEG) && 2145 !error && dp == NULL) { 2146 do { 2147 ret = nfsrpc_openrpc(VFSTONFS(vnode_mount(dvp)), dvp, 2148 np->n_fhp->nfh_fh, np->n_fhp->nfh_len, 2149 nfhp->nfh_fh, nfhp->nfh_len, 2150 (NFSV4OPEN_ACCESSWRITE | NFSV4OPEN_ACCESSREAD), op, 2151 name, namelen, &dp, 0, 0x0, cred, p, 0, 1); 2152 if (ret == NFSERR_DELAY) 2153 (void) nfs_catnap(PZERO, ret, "nfs_crt2"); 2154 } while (ret == NFSERR_DELAY); 2155 if (ret) { 2156 if (dp != NULL) 2157 FREE((caddr_t)dp, M_NFSCLDELEG); 2158 if (ret == NFSERR_STALECLIENTID || 2159 ret == NFSERR_STALEDONTRECOVER || 2160 ret == NFSERR_BADSESSION) 2161 error = ret; 2162 } 2163 } 2164 nfscl_openrelease(op, error, newone); 2165 *unlockedp = 1; 2166 } 2167 if (nd->nd_repstat != 0 && error == 0) 2168 error = nd->nd_repstat; 2169 if (error == NFSERR_STALECLIENTID || error == NFSERR_BADSESSION) 2170 nfscl_initiate_recovery(owp->nfsow_clp); 2171 nfsmout: 2172 if (!error) 2173 *dpp = dp; 2174 else if (dp != NULL) 2175 FREE((caddr_t)dp, M_NFSCLDELEG); 2176 mbuf_freem(nd->nd_mrep); 2177 return (error); 2178 } 2179 2180 /* 2181 * Nfs remove rpc 2182 */ 2183 APPLESTATIC int 2184 nfsrpc_remove(vnode_t dvp, char *name, int namelen, vnode_t vp, 2185 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, int *dattrflagp, 2186 void *dstuff) 2187 { 2188 u_int32_t *tl; 2189 struct nfsrv_descript nfsd, *nd = &nfsd; 2190 struct nfsnode *np; 2191 struct nfsmount *nmp; 2192 nfsv4stateid_t dstateid; 2193 int error, ret = 0, i; 2194 2195 *dattrflagp = 0; 2196 if (namelen > NFS_MAXNAMLEN) 2197 return (ENAMETOOLONG); 2198 nmp = VFSTONFS(vnode_mount(dvp)); 2199 tryagain: 2200 if (NFSHASNFSV4(nmp) && ret == 0) { 2201 ret = nfscl_removedeleg(vp, p, &dstateid); 2202 if (ret == 1) { 2203 NFSCL_REQSTART(nd, NFSPROC_RETDELEGREMOVE, vp); 2204 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 2205 NFSX_UNSIGNED); 2206 if (NFSHASNFSV4N(nmp)) 2207 *tl++ = 0; 2208 else 2209 *tl++ = dstateid.seqid; 2210 *tl++ = dstateid.other[0]; 2211 *tl++ = dstateid.other[1]; 2212 *tl++ = dstateid.other[2]; 2213 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2214 np = VTONFS(dvp); 2215 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, 2216 np->n_fhp->nfh_len, 0); 2217 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2218 *tl = txdr_unsigned(NFSV4OP_REMOVE); 2219 } 2220 } else { 2221 ret = 0; 2222 } 2223 if (ret == 0) 2224 NFSCL_REQSTART(nd, NFSPROC_REMOVE, dvp); 2225 (void) nfsm_strtom(nd, name, namelen); 2226 error = nfscl_request(nd, dvp, p, cred, dstuff); 2227 if (error) 2228 return (error); 2229 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 2230 /* For NFSv4, parse out any Delereturn replies. */ 2231 if (ret > 0 && nd->nd_repstat != 0 && 2232 (nd->nd_flag & ND_NOMOREDATA)) { 2233 /* 2234 * If the Delegreturn failed, try again without 2235 * it. The server will Recall, as required. 2236 */ 2237 mbuf_freem(nd->nd_mrep); 2238 goto tryagain; 2239 } 2240 for (i = 0; i < (ret * 2); i++) { 2241 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == 2242 ND_NFSV4) { 2243 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2244 if (*(tl + 1)) 2245 nd->nd_flag |= ND_NOMOREDATA; 2246 } 2247 } 2248 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2249 } 2250 if (nd->nd_repstat && !error) 2251 error = nd->nd_repstat; 2252 nfsmout: 2253 mbuf_freem(nd->nd_mrep); 2254 return (error); 2255 } 2256 2257 /* 2258 * Do an nfs rename rpc. 2259 */ 2260 APPLESTATIC int 2261 nfsrpc_rename(vnode_t fdvp, vnode_t fvp, char *fnameptr, int fnamelen, 2262 vnode_t tdvp, vnode_t tvp, char *tnameptr, int tnamelen, struct ucred *cred, 2263 NFSPROC_T *p, struct nfsvattr *fnap, struct nfsvattr *tnap, 2264 int *fattrflagp, int *tattrflagp, void *fstuff, void *tstuff) 2265 { 2266 u_int32_t *tl; 2267 struct nfsrv_descript nfsd, *nd = &nfsd; 2268 struct nfsmount *nmp; 2269 struct nfsnode *np; 2270 nfsattrbit_t attrbits; 2271 nfsv4stateid_t fdstateid, tdstateid; 2272 int error = 0, ret = 0, gottd = 0, gotfd = 0, i; 2273 2274 *fattrflagp = 0; 2275 *tattrflagp = 0; 2276 nmp = VFSTONFS(vnode_mount(fdvp)); 2277 if (fnamelen > NFS_MAXNAMLEN || tnamelen > NFS_MAXNAMLEN) 2278 return (ENAMETOOLONG); 2279 tryagain: 2280 if (NFSHASNFSV4(nmp) && ret == 0) { 2281 ret = nfscl_renamedeleg(fvp, &fdstateid, &gotfd, tvp, 2282 &tdstateid, &gottd, p); 2283 if (gotfd && gottd) { 2284 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME2, fvp); 2285 } else if (gotfd) { 2286 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME1, fvp); 2287 } else if (gottd) { 2288 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME1, tvp); 2289 } 2290 if (gotfd) { 2291 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 2292 if (NFSHASNFSV4N(nmp)) 2293 *tl++ = 0; 2294 else 2295 *tl++ = fdstateid.seqid; 2296 *tl++ = fdstateid.other[0]; 2297 *tl++ = fdstateid.other[1]; 2298 *tl = fdstateid.other[2]; 2299 if (gottd) { 2300 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2301 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2302 np = VTONFS(tvp); 2303 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, 2304 np->n_fhp->nfh_len, 0); 2305 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2306 *tl = txdr_unsigned(NFSV4OP_DELEGRETURN); 2307 } 2308 } 2309 if (gottd) { 2310 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 2311 if (NFSHASNFSV4N(nmp)) 2312 *tl++ = 0; 2313 else 2314 *tl++ = tdstateid.seqid; 2315 *tl++ = tdstateid.other[0]; 2316 *tl++ = tdstateid.other[1]; 2317 *tl = tdstateid.other[2]; 2318 } 2319 if (ret > 0) { 2320 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2321 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2322 np = VTONFS(fdvp); 2323 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, 2324 np->n_fhp->nfh_len, 0); 2325 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2326 *tl = txdr_unsigned(NFSV4OP_SAVEFH); 2327 } 2328 } else { 2329 ret = 0; 2330 } 2331 if (ret == 0) 2332 NFSCL_REQSTART(nd, NFSPROC_RENAME, fdvp); 2333 if (nd->nd_flag & ND_NFSV4) { 2334 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2335 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2336 NFSWCCATTR_ATTRBIT(&attrbits); 2337 (void) nfsrv_putattrbit(nd, &attrbits); 2338 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2339 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2340 (void) nfsm_fhtom(nd, VTONFS(tdvp)->n_fhp->nfh_fh, 2341 VTONFS(tdvp)->n_fhp->nfh_len, 0); 2342 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2343 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2344 (void) nfsrv_putattrbit(nd, &attrbits); 2345 nd->nd_flag |= ND_V4WCCATTR; 2346 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2347 *tl = txdr_unsigned(NFSV4OP_RENAME); 2348 } 2349 (void) nfsm_strtom(nd, fnameptr, fnamelen); 2350 if (!(nd->nd_flag & ND_NFSV4)) 2351 (void) nfsm_fhtom(nd, VTONFS(tdvp)->n_fhp->nfh_fh, 2352 VTONFS(tdvp)->n_fhp->nfh_len, 0); 2353 (void) nfsm_strtom(nd, tnameptr, tnamelen); 2354 error = nfscl_request(nd, fdvp, p, cred, fstuff); 2355 if (error) 2356 return (error); 2357 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 2358 /* For NFSv4, parse out any Delereturn replies. */ 2359 if (ret > 0 && nd->nd_repstat != 0 && 2360 (nd->nd_flag & ND_NOMOREDATA)) { 2361 /* 2362 * If the Delegreturn failed, try again without 2363 * it. The server will Recall, as required. 2364 */ 2365 mbuf_freem(nd->nd_mrep); 2366 goto tryagain; 2367 } 2368 for (i = 0; i < (ret * 2); i++) { 2369 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == 2370 ND_NFSV4) { 2371 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2372 if (*(tl + 1)) { 2373 if (i == 0 && ret > 1) { 2374 /* 2375 * If the Delegreturn failed, try again 2376 * without it. The server will Recall, as 2377 * required. 2378 * If ret > 1, the first iteration of this 2379 * loop is the second DelegReturn result. 2380 */ 2381 mbuf_freem(nd->nd_mrep); 2382 goto tryagain; 2383 } else { 2384 nd->nd_flag |= ND_NOMOREDATA; 2385 } 2386 } 2387 } 2388 } 2389 /* Now, the first wcc attribute reply. */ 2390 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) { 2391 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2392 if (*(tl + 1)) 2393 nd->nd_flag |= ND_NOMOREDATA; 2394 } 2395 error = nfscl_wcc_data(nd, fdvp, fnap, fattrflagp, NULL, 2396 fstuff); 2397 /* and the second wcc attribute reply. */ 2398 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4 && 2399 !error) { 2400 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2401 if (*(tl + 1)) 2402 nd->nd_flag |= ND_NOMOREDATA; 2403 } 2404 if (!error) 2405 error = nfscl_wcc_data(nd, tdvp, tnap, tattrflagp, 2406 NULL, tstuff); 2407 } 2408 if (nd->nd_repstat && !error) 2409 error = nd->nd_repstat; 2410 nfsmout: 2411 mbuf_freem(nd->nd_mrep); 2412 return (error); 2413 } 2414 2415 /* 2416 * nfs hard link create rpc 2417 */ 2418 APPLESTATIC int 2419 nfsrpc_link(vnode_t dvp, vnode_t vp, char *name, int namelen, 2420 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 2421 struct nfsvattr *nap, int *attrflagp, int *dattrflagp, void *dstuff) 2422 { 2423 u_int32_t *tl; 2424 struct nfsrv_descript nfsd, *nd = &nfsd; 2425 nfsattrbit_t attrbits; 2426 int error = 0; 2427 2428 *attrflagp = 0; 2429 *dattrflagp = 0; 2430 if (namelen > NFS_MAXNAMLEN) 2431 return (ENAMETOOLONG); 2432 NFSCL_REQSTART(nd, NFSPROC_LINK, vp); 2433 if (nd->nd_flag & ND_NFSV4) { 2434 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2435 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2436 } 2437 (void) nfsm_fhtom(nd, VTONFS(dvp)->n_fhp->nfh_fh, 2438 VTONFS(dvp)->n_fhp->nfh_len, 0); 2439 if (nd->nd_flag & ND_NFSV4) { 2440 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2441 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2442 NFSWCCATTR_ATTRBIT(&attrbits); 2443 (void) nfsrv_putattrbit(nd, &attrbits); 2444 nd->nd_flag |= ND_V4WCCATTR; 2445 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2446 *tl = txdr_unsigned(NFSV4OP_LINK); 2447 } 2448 (void) nfsm_strtom(nd, name, namelen); 2449 error = nfscl_request(nd, vp, p, cred, dstuff); 2450 if (error) 2451 return (error); 2452 if (nd->nd_flag & ND_NFSV3) { 2453 error = nfscl_postop_attr(nd, nap, attrflagp, dstuff); 2454 if (!error) 2455 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, 2456 NULL, dstuff); 2457 } else if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) { 2458 /* 2459 * First, parse out the PutFH and Getattr result. 2460 */ 2461 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2462 if (!(*(tl + 1))) 2463 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2464 if (*(tl + 1)) 2465 nd->nd_flag |= ND_NOMOREDATA; 2466 /* 2467 * Get the pre-op attributes. 2468 */ 2469 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2470 } 2471 if (nd->nd_repstat && !error) 2472 error = nd->nd_repstat; 2473 nfsmout: 2474 mbuf_freem(nd->nd_mrep); 2475 return (error); 2476 } 2477 2478 /* 2479 * nfs symbolic link create rpc 2480 */ 2481 APPLESTATIC int 2482 nfsrpc_symlink(vnode_t dvp, char *name, int namelen, char *target, 2483 struct vattr *vap, struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 2484 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp, 2485 int *dattrflagp, void *dstuff) 2486 { 2487 u_int32_t *tl; 2488 struct nfsrv_descript nfsd, *nd = &nfsd; 2489 struct nfsmount *nmp; 2490 int slen, error = 0; 2491 2492 *nfhpp = NULL; 2493 *attrflagp = 0; 2494 *dattrflagp = 0; 2495 nmp = VFSTONFS(vnode_mount(dvp)); 2496 slen = strlen(target); 2497 if (slen > NFS_MAXPATHLEN || namelen > NFS_MAXNAMLEN) 2498 return (ENAMETOOLONG); 2499 NFSCL_REQSTART(nd, NFSPROC_SYMLINK, dvp); 2500 if (nd->nd_flag & ND_NFSV4) { 2501 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2502 *tl = txdr_unsigned(NFLNK); 2503 (void) nfsm_strtom(nd, target, slen); 2504 } 2505 (void) nfsm_strtom(nd, name, namelen); 2506 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 2507 nfscl_fillsattr(nd, vap, dvp, 0, 0); 2508 if (!(nd->nd_flag & ND_NFSV4)) 2509 (void) nfsm_strtom(nd, target, slen); 2510 if (nd->nd_flag & ND_NFSV2) 2511 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZENEG1, 0); 2512 error = nfscl_request(nd, dvp, p, cred, dstuff); 2513 if (error) 2514 return (error); 2515 if (nd->nd_flag & ND_NFSV4) 2516 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2517 if ((nd->nd_flag & ND_NFSV3) && !error) { 2518 if (!nd->nd_repstat) 2519 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 2520 if (!error) 2521 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, 2522 NULL, dstuff); 2523 } 2524 if (nd->nd_repstat && !error) 2525 error = nd->nd_repstat; 2526 mbuf_freem(nd->nd_mrep); 2527 /* 2528 * Kludge: Map EEXIST => 0 assuming that it is a reply to a retry. 2529 */ 2530 if (error == EEXIST) 2531 error = 0; 2532 return (error); 2533 } 2534 2535 /* 2536 * nfs make dir rpc 2537 */ 2538 APPLESTATIC int 2539 nfsrpc_mkdir(vnode_t dvp, char *name, int namelen, struct vattr *vap, 2540 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 2541 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp, 2542 int *dattrflagp, void *dstuff) 2543 { 2544 u_int32_t *tl; 2545 struct nfsrv_descript nfsd, *nd = &nfsd; 2546 nfsattrbit_t attrbits; 2547 int error = 0; 2548 struct nfsfh *fhp; 2549 2550 *nfhpp = NULL; 2551 *attrflagp = 0; 2552 *dattrflagp = 0; 2553 fhp = VTONFS(dvp)->n_fhp; 2554 if (namelen > NFS_MAXNAMLEN) 2555 return (ENAMETOOLONG); 2556 NFSCL_REQSTART(nd, NFSPROC_MKDIR, dvp); 2557 if (nd->nd_flag & ND_NFSV4) { 2558 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2559 *tl = txdr_unsigned(NFDIR); 2560 } 2561 (void) nfsm_strtom(nd, name, namelen); 2562 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZENEG1, 0); 2563 if (nd->nd_flag & ND_NFSV4) { 2564 NFSGETATTR_ATTRBIT(&attrbits); 2565 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2566 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 2567 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2568 (void) nfsrv_putattrbit(nd, &attrbits); 2569 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2570 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2571 (void) nfsm_fhtom(nd, fhp->nfh_fh, fhp->nfh_len, 0); 2572 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2573 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2574 (void) nfsrv_putattrbit(nd, &attrbits); 2575 } 2576 error = nfscl_request(nd, dvp, p, cred, dstuff); 2577 if (error) 2578 return (error); 2579 if (nd->nd_flag & ND_NFSV4) 2580 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2581 if (!nd->nd_repstat && !error) { 2582 if (nd->nd_flag & ND_NFSV4) { 2583 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 2584 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 2585 } 2586 if (!error) 2587 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 2588 if (error == 0 && (nd->nd_flag & ND_NFSV4) != 0) { 2589 /* Get rid of the PutFH and Getattr status values. */ 2590 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 2591 /* Load the directory attributes. */ 2592 error = nfsm_loadattr(nd, dnap); 2593 if (error == 0) 2594 *dattrflagp = 1; 2595 } 2596 } 2597 if ((nd->nd_flag & ND_NFSV3) && !error) 2598 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2599 if (nd->nd_repstat && !error) 2600 error = nd->nd_repstat; 2601 nfsmout: 2602 mbuf_freem(nd->nd_mrep); 2603 /* 2604 * Kludge: Map EEXIST => 0 assuming that you have a reply to a retry. 2605 */ 2606 if (error == EEXIST) 2607 error = 0; 2608 return (error); 2609 } 2610 2611 /* 2612 * nfs remove directory call 2613 */ 2614 APPLESTATIC int 2615 nfsrpc_rmdir(vnode_t dvp, char *name, int namelen, struct ucred *cred, 2616 NFSPROC_T *p, struct nfsvattr *dnap, int *dattrflagp, void *dstuff) 2617 { 2618 struct nfsrv_descript nfsd, *nd = &nfsd; 2619 int error = 0; 2620 2621 *dattrflagp = 0; 2622 if (namelen > NFS_MAXNAMLEN) 2623 return (ENAMETOOLONG); 2624 NFSCL_REQSTART(nd, NFSPROC_RMDIR, dvp); 2625 (void) nfsm_strtom(nd, name, namelen); 2626 error = nfscl_request(nd, dvp, p, cred, dstuff); 2627 if (error) 2628 return (error); 2629 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 2630 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2631 if (nd->nd_repstat && !error) 2632 error = nd->nd_repstat; 2633 mbuf_freem(nd->nd_mrep); 2634 /* 2635 * Kludge: Map ENOENT => 0 assuming that you have a reply to a retry. 2636 */ 2637 if (error == ENOENT) 2638 error = 0; 2639 return (error); 2640 } 2641 2642 /* 2643 * Readdir rpc. 2644 * Always returns with either uio_resid unchanged, if you are at the 2645 * end of the directory, or uio_resid == 0, with all DIRBLKSIZ chunks 2646 * filled in. 2647 * I felt this would allow caching of directory blocks more easily 2648 * than returning a pertially filled block. 2649 * Directory offset cookies: 2650 * Oh my, what to do with them... 2651 * I can think of three ways to deal with them: 2652 * 1 - have the layer above these RPCs maintain a map between logical 2653 * directory byte offsets and the NFS directory offset cookies 2654 * 2 - pass the opaque directory offset cookies up into userland 2655 * and let the libc functions deal with them, via the system call 2656 * 3 - return them to userland in the "struct dirent", so future versions 2657 * of libc can use them and do whatever is necessary to amke things work 2658 * above these rpc calls, in the meantime 2659 * For now, I do #3 by "hiding" the directory offset cookies after the 2660 * d_name field in struct dirent. This is space inside d_reclen that 2661 * will be ignored by anything that doesn't know about them. 2662 * The directory offset cookies are filled in as the last 8 bytes of 2663 * each directory entry, after d_name. Someday, the userland libc 2664 * functions may be able to use these. In the meantime, it satisfies 2665 * OpenBSD's requirements for cookies being returned. 2666 * If expects the directory offset cookie for the read to be in uio_offset 2667 * and returns the one for the next entry after this directory block in 2668 * there, as well. 2669 */ 2670 APPLESTATIC int 2671 nfsrpc_readdir(vnode_t vp, struct uio *uiop, nfsuint64 *cookiep, 2672 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 2673 int *eofp, void *stuff) 2674 { 2675 int len, left; 2676 struct dirent *dp = NULL; 2677 u_int32_t *tl; 2678 nfsquad_t cookie, ncookie; 2679 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 2680 struct nfsnode *dnp = VTONFS(vp); 2681 struct nfsvattr nfsva; 2682 struct nfsrv_descript nfsd, *nd = &nfsd; 2683 int error = 0, tlen, more_dirs = 1, blksiz = 0, bigenough = 1; 2684 int reqsize, tryformoredirs = 1, readsize, eof = 0, gotmnton = 0; 2685 long dotfileid, dotdotfileid = 0; 2686 u_int32_t fakefileno = 0xffffffff, rderr; 2687 char *cp; 2688 nfsattrbit_t attrbits, dattrbits; 2689 u_int32_t *tl2 = NULL; 2690 size_t tresid; 2691 2692 KASSERT(uiop->uio_iovcnt == 1 && 2693 (uio_uio_resid(uiop) & (DIRBLKSIZ - 1)) == 0, 2694 ("nfs readdirrpc bad uio")); 2695 2696 /* 2697 * There is no point in reading a lot more than uio_resid, however 2698 * adding one additional DIRBLKSIZ makes sense. Since uio_resid 2699 * and nm_readdirsize are both exact multiples of DIRBLKSIZ, this 2700 * will never make readsize > nm_readdirsize. 2701 */ 2702 readsize = nmp->nm_readdirsize; 2703 if (readsize > uio_uio_resid(uiop)) 2704 readsize = uio_uio_resid(uiop) + DIRBLKSIZ; 2705 2706 *attrflagp = 0; 2707 if (eofp) 2708 *eofp = 0; 2709 tresid = uio_uio_resid(uiop); 2710 cookie.lval[0] = cookiep->nfsuquad[0]; 2711 cookie.lval[1] = cookiep->nfsuquad[1]; 2712 nd->nd_mrep = NULL; 2713 2714 /* 2715 * For NFSv4, first create the "." and ".." entries. 2716 */ 2717 if (NFSHASNFSV4(nmp)) { 2718 reqsize = 6 * NFSX_UNSIGNED; 2719 NFSGETATTR_ATTRBIT(&dattrbits); 2720 NFSZERO_ATTRBIT(&attrbits); 2721 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FILEID); 2722 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TYPE); 2723 if (NFSISSET_ATTRBIT(&dnp->n_vattr.na_suppattr, 2724 NFSATTRBIT_MOUNTEDONFILEID)) { 2725 NFSSETBIT_ATTRBIT(&attrbits, 2726 NFSATTRBIT_MOUNTEDONFILEID); 2727 gotmnton = 1; 2728 } else { 2729 /* 2730 * Must fake it. Use the fileno, except when the 2731 * fsid is != to that of the directory. For that 2732 * case, generate a fake fileno that is not the same. 2733 */ 2734 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FSID); 2735 gotmnton = 0; 2736 } 2737 2738 /* 2739 * Joy, oh joy. For V4 we get to hand craft '.' and '..'. 2740 */ 2741 if (uiop->uio_offset == 0) { 2742 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, vp); 2743 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2744 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 2745 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2746 (void) nfsrv_putattrbit(nd, &attrbits); 2747 error = nfscl_request(nd, vp, p, cred, stuff); 2748 if (error) 2749 return (error); 2750 dotfileid = 0; /* Fake out the compiler. */ 2751 if ((nd->nd_flag & ND_NOMOREDATA) == 0) { 2752 error = nfsm_loadattr(nd, &nfsva); 2753 if (error != 0) 2754 goto nfsmout; 2755 dotfileid = nfsva.na_fileid; 2756 } 2757 if (nd->nd_repstat == 0) { 2758 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 2759 len = fxdr_unsigned(int, *(tl + 4)); 2760 if (len > 0 && len <= NFSX_V4FHMAX) 2761 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 2762 else 2763 error = EPERM; 2764 if (!error) { 2765 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 2766 nfsva.na_mntonfileno = 0xffffffff; 2767 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 2768 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 2769 NULL, NULL, NULL, p, cred); 2770 if (error) { 2771 dotdotfileid = dotfileid; 2772 } else if (gotmnton) { 2773 if (nfsva.na_mntonfileno != 0xffffffff) 2774 dotdotfileid = nfsva.na_mntonfileno; 2775 else 2776 dotdotfileid = nfsva.na_fileid; 2777 } else if (nfsva.na_filesid[0] == 2778 dnp->n_vattr.na_filesid[0] && 2779 nfsva.na_filesid[1] == 2780 dnp->n_vattr.na_filesid[1]) { 2781 dotdotfileid = nfsva.na_fileid; 2782 } else { 2783 do { 2784 fakefileno--; 2785 } while (fakefileno == 2786 nfsva.na_fileid); 2787 dotdotfileid = fakefileno; 2788 } 2789 } 2790 } else if (nd->nd_repstat == NFSERR_NOENT) { 2791 /* 2792 * Lookupp returns NFSERR_NOENT when we are 2793 * at the root, so just use the current dir. 2794 */ 2795 nd->nd_repstat = 0; 2796 dotdotfileid = dotfileid; 2797 } else { 2798 error = nd->nd_repstat; 2799 } 2800 mbuf_freem(nd->nd_mrep); 2801 if (error) 2802 return (error); 2803 nd->nd_mrep = NULL; 2804 dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop)); 2805 dp->d_type = DT_DIR; 2806 dp->d_fileno = dotfileid; 2807 dp->d_namlen = 1; 2808 dp->d_name[0] = '.'; 2809 dp->d_name[1] = '\0'; 2810 dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER; 2811 /* 2812 * Just make these offset cookie 0. 2813 */ 2814 tl = (u_int32_t *)&dp->d_name[4]; 2815 *tl++ = 0; 2816 *tl = 0; 2817 blksiz += dp->d_reclen; 2818 uio_uio_resid_add(uiop, -(dp->d_reclen)); 2819 uiop->uio_offset += dp->d_reclen; 2820 uio_iov_base_add(uiop, dp->d_reclen); 2821 uio_iov_len_add(uiop, -(dp->d_reclen)); 2822 dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop)); 2823 dp->d_type = DT_DIR; 2824 dp->d_fileno = dotdotfileid; 2825 dp->d_namlen = 2; 2826 dp->d_name[0] = '.'; 2827 dp->d_name[1] = '.'; 2828 dp->d_name[2] = '\0'; 2829 dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER; 2830 /* 2831 * Just make these offset cookie 0. 2832 */ 2833 tl = (u_int32_t *)&dp->d_name[4]; 2834 *tl++ = 0; 2835 *tl = 0; 2836 blksiz += dp->d_reclen; 2837 uio_uio_resid_add(uiop, -(dp->d_reclen)); 2838 uiop->uio_offset += dp->d_reclen; 2839 uio_iov_base_add(uiop, dp->d_reclen); 2840 uio_iov_len_add(uiop, -(dp->d_reclen)); 2841 } 2842 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_RDATTRERROR); 2843 } else { 2844 reqsize = 5 * NFSX_UNSIGNED; 2845 } 2846 2847 2848 /* 2849 * Loop around doing readdir rpc's of size readsize. 2850 * The stopping criteria is EOF or buffer full. 2851 */ 2852 while (more_dirs && bigenough) { 2853 *attrflagp = 0; 2854 NFSCL_REQSTART(nd, NFSPROC_READDIR, vp); 2855 if (nd->nd_flag & ND_NFSV2) { 2856 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2857 *tl++ = cookie.lval[1]; 2858 *tl = txdr_unsigned(readsize); 2859 } else { 2860 NFSM_BUILD(tl, u_int32_t *, reqsize); 2861 *tl++ = cookie.lval[0]; 2862 *tl++ = cookie.lval[1]; 2863 if (cookie.qval == 0) { 2864 *tl++ = 0; 2865 *tl++ = 0; 2866 } else { 2867 NFSLOCKNODE(dnp); 2868 *tl++ = dnp->n_cookieverf.nfsuquad[0]; 2869 *tl++ = dnp->n_cookieverf.nfsuquad[1]; 2870 NFSUNLOCKNODE(dnp); 2871 } 2872 if (nd->nd_flag & ND_NFSV4) { 2873 *tl++ = txdr_unsigned(readsize); 2874 *tl = txdr_unsigned(readsize); 2875 (void) nfsrv_putattrbit(nd, &attrbits); 2876 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2877 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2878 (void) nfsrv_putattrbit(nd, &dattrbits); 2879 } else { 2880 *tl = txdr_unsigned(readsize); 2881 } 2882 } 2883 error = nfscl_request(nd, vp, p, cred, stuff); 2884 if (error) 2885 return (error); 2886 if (!(nd->nd_flag & ND_NFSV2)) { 2887 if (nd->nd_flag & ND_NFSV3) 2888 error = nfscl_postop_attr(nd, nap, attrflagp, 2889 stuff); 2890 if (!nd->nd_repstat && !error) { 2891 NFSM_DISSECT(tl, u_int32_t *, NFSX_HYPER); 2892 NFSLOCKNODE(dnp); 2893 dnp->n_cookieverf.nfsuquad[0] = *tl++; 2894 dnp->n_cookieverf.nfsuquad[1] = *tl; 2895 NFSUNLOCKNODE(dnp); 2896 } 2897 } 2898 if (nd->nd_repstat || error) { 2899 if (!error) 2900 error = nd->nd_repstat; 2901 goto nfsmout; 2902 } 2903 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2904 more_dirs = fxdr_unsigned(int, *tl); 2905 if (!more_dirs) 2906 tryformoredirs = 0; 2907 2908 /* loop thru the dir entries, doctoring them to 4bsd form */ 2909 while (more_dirs && bigenough) { 2910 if (nd->nd_flag & ND_NFSV4) { 2911 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 2912 ncookie.lval[0] = *tl++; 2913 ncookie.lval[1] = *tl++; 2914 len = fxdr_unsigned(int, *tl); 2915 } else if (nd->nd_flag & ND_NFSV3) { 2916 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 2917 nfsva.na_fileid = fxdr_hyper(tl); 2918 tl += 2; 2919 len = fxdr_unsigned(int, *tl); 2920 } else { 2921 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 2922 nfsva.na_fileid = 2923 fxdr_unsigned(long, *tl++); 2924 len = fxdr_unsigned(int, *tl); 2925 } 2926 if (len <= 0 || len > NFS_MAXNAMLEN) { 2927 error = EBADRPC; 2928 goto nfsmout; 2929 } 2930 tlen = NFSM_RNDUP(len); 2931 if (tlen == len) 2932 tlen += 4; /* To ensure null termination */ 2933 left = DIRBLKSIZ - blksiz; 2934 if ((int)(tlen + DIRHDSIZ + NFSX_HYPER) > left) { 2935 dp->d_reclen += left; 2936 uio_iov_base_add(uiop, left); 2937 uio_iov_len_add(uiop, -(left)); 2938 uio_uio_resid_add(uiop, -(left)); 2939 uiop->uio_offset += left; 2940 blksiz = 0; 2941 } 2942 if ((int)(tlen + DIRHDSIZ + NFSX_HYPER) > uio_uio_resid(uiop)) 2943 bigenough = 0; 2944 if (bigenough) { 2945 dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop)); 2946 dp->d_namlen = len; 2947 dp->d_reclen = tlen + DIRHDSIZ + NFSX_HYPER; 2948 dp->d_type = DT_UNKNOWN; 2949 blksiz += dp->d_reclen; 2950 if (blksiz == DIRBLKSIZ) 2951 blksiz = 0; 2952 uio_uio_resid_add(uiop, -(DIRHDSIZ)); 2953 uiop->uio_offset += DIRHDSIZ; 2954 uio_iov_base_add(uiop, DIRHDSIZ); 2955 uio_iov_len_add(uiop, -(DIRHDSIZ)); 2956 error = nfsm_mbufuio(nd, uiop, len); 2957 if (error) 2958 goto nfsmout; 2959 cp = CAST_DOWN(caddr_t, uio_iov_base(uiop)); 2960 tlen -= len; 2961 *cp = '\0'; /* null terminate */ 2962 cp += tlen; /* points to cookie storage */ 2963 tl2 = (u_int32_t *)cp; 2964 uio_iov_base_add(uiop, (tlen + NFSX_HYPER)); 2965 uio_iov_len_add(uiop, -(tlen + NFSX_HYPER)); 2966 uio_uio_resid_add(uiop, -(tlen + NFSX_HYPER)); 2967 uiop->uio_offset += (tlen + NFSX_HYPER); 2968 } else { 2969 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 2970 if (error) 2971 goto nfsmout; 2972 } 2973 if (nd->nd_flag & ND_NFSV4) { 2974 rderr = 0; 2975 nfsva.na_mntonfileno = 0xffffffff; 2976 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 2977 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 2978 NULL, NULL, &rderr, p, cred); 2979 if (error) 2980 goto nfsmout; 2981 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2982 } else if (nd->nd_flag & ND_NFSV3) { 2983 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 2984 ncookie.lval[0] = *tl++; 2985 ncookie.lval[1] = *tl++; 2986 } else { 2987 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 2988 ncookie.lval[0] = 0; 2989 ncookie.lval[1] = *tl++; 2990 } 2991 if (bigenough) { 2992 if (nd->nd_flag & ND_NFSV4) { 2993 if (rderr) { 2994 dp->d_fileno = 0; 2995 } else { 2996 if (gotmnton) { 2997 if (nfsva.na_mntonfileno != 0xffffffff) 2998 dp->d_fileno = nfsva.na_mntonfileno; 2999 else 3000 dp->d_fileno = nfsva.na_fileid; 3001 } else if (nfsva.na_filesid[0] == 3002 dnp->n_vattr.na_filesid[0] && 3003 nfsva.na_filesid[1] == 3004 dnp->n_vattr.na_filesid[1]) { 3005 dp->d_fileno = nfsva.na_fileid; 3006 } else { 3007 do { 3008 fakefileno--; 3009 } while (fakefileno == 3010 nfsva.na_fileid); 3011 dp->d_fileno = fakefileno; 3012 } 3013 dp->d_type = vtonfs_dtype(nfsva.na_type); 3014 } 3015 } else { 3016 dp->d_fileno = nfsva.na_fileid; 3017 } 3018 *tl2++ = cookiep->nfsuquad[0] = cookie.lval[0] = 3019 ncookie.lval[0]; 3020 *tl2 = cookiep->nfsuquad[1] = cookie.lval[1] = 3021 ncookie.lval[1]; 3022 } 3023 more_dirs = fxdr_unsigned(int, *tl); 3024 } 3025 /* 3026 * If at end of rpc data, get the eof boolean 3027 */ 3028 if (!more_dirs) { 3029 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3030 eof = fxdr_unsigned(int, *tl); 3031 if (tryformoredirs) 3032 more_dirs = !eof; 3033 if (nd->nd_flag & ND_NFSV4) { 3034 error = nfscl_postop_attr(nd, nap, attrflagp, 3035 stuff); 3036 if (error) 3037 goto nfsmout; 3038 } 3039 } 3040 mbuf_freem(nd->nd_mrep); 3041 nd->nd_mrep = NULL; 3042 } 3043 /* 3044 * Fill last record, iff any, out to a multiple of DIRBLKSIZ 3045 * by increasing d_reclen for the last record. 3046 */ 3047 if (blksiz > 0) { 3048 left = DIRBLKSIZ - blksiz; 3049 dp->d_reclen += left; 3050 uio_iov_base_add(uiop, left); 3051 uio_iov_len_add(uiop, -(left)); 3052 uio_uio_resid_add(uiop, -(left)); 3053 uiop->uio_offset += left; 3054 } 3055 3056 /* 3057 * If returning no data, assume end of file. 3058 * If not bigenough, return not end of file, since you aren't 3059 * returning all the data 3060 * Otherwise, return the eof flag from the server. 3061 */ 3062 if (eofp) { 3063 if (tresid == ((size_t)(uio_uio_resid(uiop)))) 3064 *eofp = 1; 3065 else if (!bigenough) 3066 *eofp = 0; 3067 else 3068 *eofp = eof; 3069 } 3070 3071 /* 3072 * Add extra empty records to any remaining DIRBLKSIZ chunks. 3073 */ 3074 while (uio_uio_resid(uiop) > 0 && ((size_t)(uio_uio_resid(uiop))) != tresid) { 3075 dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop)); 3076 dp->d_type = DT_UNKNOWN; 3077 dp->d_fileno = 0; 3078 dp->d_namlen = 0; 3079 dp->d_name[0] = '\0'; 3080 tl = (u_int32_t *)&dp->d_name[4]; 3081 *tl++ = cookie.lval[0]; 3082 *tl = cookie.lval[1]; 3083 dp->d_reclen = DIRBLKSIZ; 3084 uio_iov_base_add(uiop, DIRBLKSIZ); 3085 uio_iov_len_add(uiop, -(DIRBLKSIZ)); 3086 uio_uio_resid_add(uiop, -(DIRBLKSIZ)); 3087 uiop->uio_offset += DIRBLKSIZ; 3088 } 3089 3090 nfsmout: 3091 if (nd->nd_mrep != NULL) 3092 mbuf_freem(nd->nd_mrep); 3093 return (error); 3094 } 3095 3096 #ifndef APPLE 3097 /* 3098 * NFS V3 readdir plus RPC. Used in place of nfsrpc_readdir(). 3099 * (Also used for NFS V4 when mount flag set.) 3100 * (ditto above w.r.t. multiple of DIRBLKSIZ, etc.) 3101 */ 3102 APPLESTATIC int 3103 nfsrpc_readdirplus(vnode_t vp, struct uio *uiop, nfsuint64 *cookiep, 3104 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 3105 int *eofp, void *stuff) 3106 { 3107 int len, left; 3108 struct dirent *dp = NULL; 3109 u_int32_t *tl; 3110 vnode_t newvp = NULLVP; 3111 struct nfsrv_descript nfsd, *nd = &nfsd; 3112 struct nameidata nami, *ndp = &nami; 3113 struct componentname *cnp = &ndp->ni_cnd; 3114 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 3115 struct nfsnode *dnp = VTONFS(vp), *np; 3116 struct nfsvattr nfsva; 3117 struct nfsfh *nfhp; 3118 nfsquad_t cookie, ncookie; 3119 int error = 0, tlen, more_dirs = 1, blksiz = 0, bigenough = 1; 3120 int attrflag, tryformoredirs = 1, eof = 0, gotmnton = 0; 3121 int isdotdot = 0, unlocknewvp = 0; 3122 long dotfileid, dotdotfileid = 0, fileno = 0; 3123 char *cp; 3124 nfsattrbit_t attrbits, dattrbits; 3125 size_t tresid; 3126 u_int32_t *tl2 = NULL, fakefileno = 0xffffffff, rderr; 3127 struct timespec dctime; 3128 3129 KASSERT(uiop->uio_iovcnt == 1 && 3130 (uio_uio_resid(uiop) & (DIRBLKSIZ - 1)) == 0, 3131 ("nfs readdirplusrpc bad uio")); 3132 timespecclear(&dctime); 3133 *attrflagp = 0; 3134 if (eofp != NULL) 3135 *eofp = 0; 3136 ndp->ni_dvp = vp; 3137 nd->nd_mrep = NULL; 3138 cookie.lval[0] = cookiep->nfsuquad[0]; 3139 cookie.lval[1] = cookiep->nfsuquad[1]; 3140 tresid = uio_uio_resid(uiop); 3141 3142 /* 3143 * For NFSv4, first create the "." and ".." entries. 3144 */ 3145 if (NFSHASNFSV4(nmp)) { 3146 NFSGETATTR_ATTRBIT(&dattrbits); 3147 NFSZERO_ATTRBIT(&attrbits); 3148 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FILEID); 3149 if (NFSISSET_ATTRBIT(&dnp->n_vattr.na_suppattr, 3150 NFSATTRBIT_MOUNTEDONFILEID)) { 3151 NFSSETBIT_ATTRBIT(&attrbits, 3152 NFSATTRBIT_MOUNTEDONFILEID); 3153 gotmnton = 1; 3154 } else { 3155 /* 3156 * Must fake it. Use the fileno, except when the 3157 * fsid is != to that of the directory. For that 3158 * case, generate a fake fileno that is not the same. 3159 */ 3160 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FSID); 3161 gotmnton = 0; 3162 } 3163 3164 /* 3165 * Joy, oh joy. For V4 we get to hand craft '.' and '..'. 3166 */ 3167 if (uiop->uio_offset == 0) { 3168 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, vp); 3169 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 3170 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 3171 *tl = txdr_unsigned(NFSV4OP_GETATTR); 3172 (void) nfsrv_putattrbit(nd, &attrbits); 3173 error = nfscl_request(nd, vp, p, cred, stuff); 3174 if (error) 3175 return (error); 3176 dotfileid = 0; /* Fake out the compiler. */ 3177 if ((nd->nd_flag & ND_NOMOREDATA) == 0) { 3178 error = nfsm_loadattr(nd, &nfsva); 3179 if (error != 0) 3180 goto nfsmout; 3181 dctime = nfsva.na_ctime; 3182 dotfileid = nfsva.na_fileid; 3183 } 3184 if (nd->nd_repstat == 0) { 3185 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 3186 len = fxdr_unsigned(int, *(tl + 4)); 3187 if (len > 0 && len <= NFSX_V4FHMAX) 3188 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 3189 else 3190 error = EPERM; 3191 if (!error) { 3192 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 3193 nfsva.na_mntonfileno = 0xffffffff; 3194 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 3195 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 3196 NULL, NULL, NULL, p, cred); 3197 if (error) { 3198 dotdotfileid = dotfileid; 3199 } else if (gotmnton) { 3200 if (nfsva.na_mntonfileno != 0xffffffff) 3201 dotdotfileid = nfsva.na_mntonfileno; 3202 else 3203 dotdotfileid = nfsva.na_fileid; 3204 } else if (nfsva.na_filesid[0] == 3205 dnp->n_vattr.na_filesid[0] && 3206 nfsva.na_filesid[1] == 3207 dnp->n_vattr.na_filesid[1]) { 3208 dotdotfileid = nfsva.na_fileid; 3209 } else { 3210 do { 3211 fakefileno--; 3212 } while (fakefileno == 3213 nfsva.na_fileid); 3214 dotdotfileid = fakefileno; 3215 } 3216 } 3217 } else if (nd->nd_repstat == NFSERR_NOENT) { 3218 /* 3219 * Lookupp returns NFSERR_NOENT when we are 3220 * at the root, so just use the current dir. 3221 */ 3222 nd->nd_repstat = 0; 3223 dotdotfileid = dotfileid; 3224 } else { 3225 error = nd->nd_repstat; 3226 } 3227 mbuf_freem(nd->nd_mrep); 3228 if (error) 3229 return (error); 3230 nd->nd_mrep = NULL; 3231 dp = (struct dirent *)uio_iov_base(uiop); 3232 dp->d_type = DT_DIR; 3233 dp->d_fileno = dotfileid; 3234 dp->d_namlen = 1; 3235 dp->d_name[0] = '.'; 3236 dp->d_name[1] = '\0'; 3237 dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER; 3238 /* 3239 * Just make these offset cookie 0. 3240 */ 3241 tl = (u_int32_t *)&dp->d_name[4]; 3242 *tl++ = 0; 3243 *tl = 0; 3244 blksiz += dp->d_reclen; 3245 uio_uio_resid_add(uiop, -(dp->d_reclen)); 3246 uiop->uio_offset += dp->d_reclen; 3247 uio_iov_base_add(uiop, dp->d_reclen); 3248 uio_iov_len_add(uiop, -(dp->d_reclen)); 3249 dp = (struct dirent *)uio_iov_base(uiop); 3250 dp->d_type = DT_DIR; 3251 dp->d_fileno = dotdotfileid; 3252 dp->d_namlen = 2; 3253 dp->d_name[0] = '.'; 3254 dp->d_name[1] = '.'; 3255 dp->d_name[2] = '\0'; 3256 dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER; 3257 /* 3258 * Just make these offset cookie 0. 3259 */ 3260 tl = (u_int32_t *)&dp->d_name[4]; 3261 *tl++ = 0; 3262 *tl = 0; 3263 blksiz += dp->d_reclen; 3264 uio_uio_resid_add(uiop, -(dp->d_reclen)); 3265 uiop->uio_offset += dp->d_reclen; 3266 uio_iov_base_add(uiop, dp->d_reclen); 3267 uio_iov_len_add(uiop, -(dp->d_reclen)); 3268 } 3269 NFSREADDIRPLUS_ATTRBIT(&attrbits); 3270 if (gotmnton) 3271 NFSSETBIT_ATTRBIT(&attrbits, 3272 NFSATTRBIT_MOUNTEDONFILEID); 3273 } 3274 3275 /* 3276 * Loop around doing readdir rpc's of size nm_readdirsize. 3277 * The stopping criteria is EOF or buffer full. 3278 */ 3279 while (more_dirs && bigenough) { 3280 *attrflagp = 0; 3281 NFSCL_REQSTART(nd, NFSPROC_READDIRPLUS, vp); 3282 NFSM_BUILD(tl, u_int32_t *, 6 * NFSX_UNSIGNED); 3283 *tl++ = cookie.lval[0]; 3284 *tl++ = cookie.lval[1]; 3285 if (cookie.qval == 0) { 3286 *tl++ = 0; 3287 *tl++ = 0; 3288 } else { 3289 NFSLOCKNODE(dnp); 3290 *tl++ = dnp->n_cookieverf.nfsuquad[0]; 3291 *tl++ = dnp->n_cookieverf.nfsuquad[1]; 3292 NFSUNLOCKNODE(dnp); 3293 } 3294 *tl++ = txdr_unsigned(nmp->nm_readdirsize); 3295 *tl = txdr_unsigned(nmp->nm_readdirsize); 3296 if (nd->nd_flag & ND_NFSV4) { 3297 (void) nfsrv_putattrbit(nd, &attrbits); 3298 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 3299 *tl = txdr_unsigned(NFSV4OP_GETATTR); 3300 (void) nfsrv_putattrbit(nd, &dattrbits); 3301 } 3302 error = nfscl_request(nd, vp, p, cred, stuff); 3303 if (error) 3304 return (error); 3305 if (nd->nd_flag & ND_NFSV3) 3306 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 3307 if (nd->nd_repstat || error) { 3308 if (!error) 3309 error = nd->nd_repstat; 3310 goto nfsmout; 3311 } 3312 if ((nd->nd_flag & ND_NFSV3) != 0 && *attrflagp != 0) 3313 dctime = nap->na_ctime; 3314 NFSM_DISSECT(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 3315 NFSLOCKNODE(dnp); 3316 dnp->n_cookieverf.nfsuquad[0] = *tl++; 3317 dnp->n_cookieverf.nfsuquad[1] = *tl++; 3318 NFSUNLOCKNODE(dnp); 3319 more_dirs = fxdr_unsigned(int, *tl); 3320 if (!more_dirs) 3321 tryformoredirs = 0; 3322 3323 /* loop thru the dir entries, doctoring them to 4bsd form */ 3324 while (more_dirs && bigenough) { 3325 NFSM_DISSECT(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 3326 if (nd->nd_flag & ND_NFSV4) { 3327 ncookie.lval[0] = *tl++; 3328 ncookie.lval[1] = *tl++; 3329 } else { 3330 fileno = fxdr_unsigned(long, *++tl); 3331 tl++; 3332 } 3333 len = fxdr_unsigned(int, *tl); 3334 if (len <= 0 || len > NFS_MAXNAMLEN) { 3335 error = EBADRPC; 3336 goto nfsmout; 3337 } 3338 tlen = NFSM_RNDUP(len); 3339 if (tlen == len) 3340 tlen += 4; /* To ensure null termination */ 3341 left = DIRBLKSIZ - blksiz; 3342 if ((tlen + DIRHDSIZ + NFSX_HYPER) > left) { 3343 dp->d_reclen += left; 3344 uio_iov_base_add(uiop, left); 3345 uio_iov_len_add(uiop, -(left)); 3346 uio_uio_resid_add(uiop, -(left)); 3347 uiop->uio_offset += left; 3348 blksiz = 0; 3349 } 3350 if ((tlen + DIRHDSIZ + NFSX_HYPER) > uio_uio_resid(uiop)) 3351 bigenough = 0; 3352 if (bigenough) { 3353 dp = (struct dirent *)uio_iov_base(uiop); 3354 dp->d_namlen = len; 3355 dp->d_reclen = tlen + DIRHDSIZ + NFSX_HYPER; 3356 dp->d_type = DT_UNKNOWN; 3357 blksiz += dp->d_reclen; 3358 if (blksiz == DIRBLKSIZ) 3359 blksiz = 0; 3360 uio_uio_resid_add(uiop, -(DIRHDSIZ)); 3361 uiop->uio_offset += DIRHDSIZ; 3362 uio_iov_base_add(uiop, DIRHDSIZ); 3363 uio_iov_len_add(uiop, -(DIRHDSIZ)); 3364 cnp->cn_nameptr = uio_iov_base(uiop); 3365 cnp->cn_namelen = len; 3366 NFSCNHASHZERO(cnp); 3367 error = nfsm_mbufuio(nd, uiop, len); 3368 if (error) 3369 goto nfsmout; 3370 cp = uio_iov_base(uiop); 3371 tlen -= len; 3372 *cp = '\0'; 3373 cp += tlen; /* points to cookie storage */ 3374 tl2 = (u_int32_t *)cp; 3375 if (len == 2 && cnp->cn_nameptr[0] == '.' && 3376 cnp->cn_nameptr[1] == '.') 3377 isdotdot = 1; 3378 else 3379 isdotdot = 0; 3380 uio_iov_base_add(uiop, (tlen + NFSX_HYPER)); 3381 uio_iov_len_add(uiop, -(tlen + NFSX_HYPER)); 3382 uio_uio_resid_add(uiop, -(tlen + NFSX_HYPER)); 3383 uiop->uio_offset += (tlen + NFSX_HYPER); 3384 } else { 3385 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 3386 if (error) 3387 goto nfsmout; 3388 } 3389 nfhp = NULL; 3390 if (nd->nd_flag & ND_NFSV3) { 3391 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 3392 ncookie.lval[0] = *tl++; 3393 ncookie.lval[1] = *tl++; 3394 attrflag = fxdr_unsigned(int, *tl); 3395 if (attrflag) { 3396 error = nfsm_loadattr(nd, &nfsva); 3397 if (error) 3398 goto nfsmout; 3399 } 3400 NFSM_DISSECT(tl,u_int32_t *,NFSX_UNSIGNED); 3401 if (*tl) { 3402 error = nfsm_getfh(nd, &nfhp); 3403 if (error) 3404 goto nfsmout; 3405 } 3406 if (!attrflag && nfhp != NULL) { 3407 FREE((caddr_t)nfhp, M_NFSFH); 3408 nfhp = NULL; 3409 } 3410 } else { 3411 rderr = 0; 3412 nfsva.na_mntonfileno = 0xffffffff; 3413 error = nfsv4_loadattr(nd, NULL, &nfsva, &nfhp, 3414 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 3415 NULL, NULL, &rderr, p, cred); 3416 if (error) 3417 goto nfsmout; 3418 } 3419 3420 if (bigenough) { 3421 if (nd->nd_flag & ND_NFSV4) { 3422 if (rderr) { 3423 dp->d_fileno = 0; 3424 } else if (gotmnton) { 3425 if (nfsva.na_mntonfileno != 0xffffffff) 3426 dp->d_fileno = nfsva.na_mntonfileno; 3427 else 3428 dp->d_fileno = nfsva.na_fileid; 3429 } else if (nfsva.na_filesid[0] == 3430 dnp->n_vattr.na_filesid[0] && 3431 nfsva.na_filesid[1] == 3432 dnp->n_vattr.na_filesid[1]) { 3433 dp->d_fileno = nfsva.na_fileid; 3434 } else { 3435 do { 3436 fakefileno--; 3437 } while (fakefileno == 3438 nfsva.na_fileid); 3439 dp->d_fileno = fakefileno; 3440 } 3441 } else { 3442 dp->d_fileno = fileno; 3443 } 3444 *tl2++ = cookiep->nfsuquad[0] = cookie.lval[0] = 3445 ncookie.lval[0]; 3446 *tl2 = cookiep->nfsuquad[1] = cookie.lval[1] = 3447 ncookie.lval[1]; 3448 3449 if (nfhp != NULL) { 3450 if (NFSRV_CMPFH(nfhp->nfh_fh, nfhp->nfh_len, 3451 dnp->n_fhp->nfh_fh, dnp->n_fhp->nfh_len)) { 3452 VREF(vp); 3453 newvp = vp; 3454 unlocknewvp = 0; 3455 FREE((caddr_t)nfhp, M_NFSFH); 3456 np = dnp; 3457 } else if (isdotdot != 0) { 3458 /* 3459 * Skip doing a nfscl_nget() call for "..". 3460 * There's a race between acquiring the nfs 3461 * node here and lookups that look for the 3462 * directory being read (in the parent). 3463 * It would try to get a lock on ".." here, 3464 * owning the lock on the directory being 3465 * read. Lookup will hold the lock on ".." 3466 * and try to acquire the lock on the 3467 * directory being read. 3468 * If the directory is unlocked/relocked, 3469 * then there is a LOR with the buflock 3470 * vp is relocked. 3471 */ 3472 free(nfhp, M_NFSFH); 3473 } else { 3474 error = nfscl_nget(vnode_mount(vp), vp, 3475 nfhp, cnp, p, &np, NULL, LK_EXCLUSIVE); 3476 if (!error) { 3477 newvp = NFSTOV(np); 3478 unlocknewvp = 1; 3479 } 3480 } 3481 nfhp = NULL; 3482 if (newvp != NULLVP) { 3483 error = nfscl_loadattrcache(&newvp, 3484 &nfsva, NULL, NULL, 0, 0); 3485 if (error) { 3486 if (unlocknewvp) 3487 vput(newvp); 3488 else 3489 vrele(newvp); 3490 goto nfsmout; 3491 } 3492 dp->d_type = 3493 vtonfs_dtype(np->n_vattr.na_type); 3494 ndp->ni_vp = newvp; 3495 NFSCNHASH(cnp, HASHINIT); 3496 if (cnp->cn_namelen <= NCHNAMLEN && 3497 (newvp->v_type != VDIR || 3498 dctime.tv_sec != 0)) { 3499 cache_enter_time(ndp->ni_dvp, 3500 ndp->ni_vp, cnp, 3501 &nfsva.na_ctime, 3502 newvp->v_type != VDIR ? NULL : 3503 &dctime); 3504 } 3505 if (unlocknewvp) 3506 vput(newvp); 3507 else 3508 vrele(newvp); 3509 newvp = NULLVP; 3510 } 3511 } 3512 } else if (nfhp != NULL) { 3513 FREE((caddr_t)nfhp, M_NFSFH); 3514 } 3515 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3516 more_dirs = fxdr_unsigned(int, *tl); 3517 } 3518 /* 3519 * If at end of rpc data, get the eof boolean 3520 */ 3521 if (!more_dirs) { 3522 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3523 eof = fxdr_unsigned(int, *tl); 3524 if (tryformoredirs) 3525 more_dirs = !eof; 3526 if (nd->nd_flag & ND_NFSV4) { 3527 error = nfscl_postop_attr(nd, nap, attrflagp, 3528 stuff); 3529 if (error) 3530 goto nfsmout; 3531 } 3532 } 3533 mbuf_freem(nd->nd_mrep); 3534 nd->nd_mrep = NULL; 3535 } 3536 /* 3537 * Fill last record, iff any, out to a multiple of DIRBLKSIZ 3538 * by increasing d_reclen for the last record. 3539 */ 3540 if (blksiz > 0) { 3541 left = DIRBLKSIZ - blksiz; 3542 dp->d_reclen += left; 3543 uio_iov_base_add(uiop, left); 3544 uio_iov_len_add(uiop, -(left)); 3545 uio_uio_resid_add(uiop, -(left)); 3546 uiop->uio_offset += left; 3547 } 3548 3549 /* 3550 * If returning no data, assume end of file. 3551 * If not bigenough, return not end of file, since you aren't 3552 * returning all the data 3553 * Otherwise, return the eof flag from the server. 3554 */ 3555 if (eofp != NULL) { 3556 if (tresid == uio_uio_resid(uiop)) 3557 *eofp = 1; 3558 else if (!bigenough) 3559 *eofp = 0; 3560 else 3561 *eofp = eof; 3562 } 3563 3564 /* 3565 * Add extra empty records to any remaining DIRBLKSIZ chunks. 3566 */ 3567 while (uio_uio_resid(uiop) > 0 && uio_uio_resid(uiop) != tresid) { 3568 dp = (struct dirent *)uio_iov_base(uiop); 3569 dp->d_type = DT_UNKNOWN; 3570 dp->d_fileno = 0; 3571 dp->d_namlen = 0; 3572 dp->d_name[0] = '\0'; 3573 tl = (u_int32_t *)&dp->d_name[4]; 3574 *tl++ = cookie.lval[0]; 3575 *tl = cookie.lval[1]; 3576 dp->d_reclen = DIRBLKSIZ; 3577 uio_iov_base_add(uiop, DIRBLKSIZ); 3578 uio_iov_len_add(uiop, -(DIRBLKSIZ)); 3579 uio_uio_resid_add(uiop, -(DIRBLKSIZ)); 3580 uiop->uio_offset += DIRBLKSIZ; 3581 } 3582 3583 nfsmout: 3584 if (nd->nd_mrep != NULL) 3585 mbuf_freem(nd->nd_mrep); 3586 return (error); 3587 } 3588 #endif /* !APPLE */ 3589 3590 /* 3591 * Nfs commit rpc 3592 */ 3593 APPLESTATIC int 3594 nfsrpc_commit(vnode_t vp, u_quad_t offset, int cnt, struct ucred *cred, 3595 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 3596 { 3597 u_int32_t *tl; 3598 struct nfsrv_descript nfsd, *nd = &nfsd; 3599 nfsattrbit_t attrbits; 3600 int error; 3601 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 3602 3603 *attrflagp = 0; 3604 NFSCL_REQSTART(nd, NFSPROC_COMMIT, vp); 3605 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 3606 txdr_hyper(offset, tl); 3607 tl += 2; 3608 *tl = txdr_unsigned(cnt); 3609 if (nd->nd_flag & ND_NFSV4) { 3610 /* 3611 * And do a Getattr op. 3612 */ 3613 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 3614 *tl = txdr_unsigned(NFSV4OP_GETATTR); 3615 NFSGETATTR_ATTRBIT(&attrbits); 3616 (void) nfsrv_putattrbit(nd, &attrbits); 3617 } 3618 error = nfscl_request(nd, vp, p, cred, stuff); 3619 if (error) 3620 return (error); 3621 error = nfscl_wcc_data(nd, vp, nap, attrflagp, NULL, stuff); 3622 if (!error && !nd->nd_repstat) { 3623 NFSM_DISSECT(tl, u_int32_t *, NFSX_VERF); 3624 NFSLOCKMNT(nmp); 3625 if (NFSBCMP(nmp->nm_verf, tl, NFSX_VERF)) { 3626 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 3627 nd->nd_repstat = NFSERR_STALEWRITEVERF; 3628 } 3629 NFSUNLOCKMNT(nmp); 3630 if (nd->nd_flag & ND_NFSV4) 3631 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 3632 } 3633 nfsmout: 3634 if (!error && nd->nd_repstat) 3635 error = nd->nd_repstat; 3636 mbuf_freem(nd->nd_mrep); 3637 return (error); 3638 } 3639 3640 /* 3641 * NFS byte range lock rpc. 3642 * (Mostly just calls one of the three lower level RPC routines.) 3643 */ 3644 APPLESTATIC int 3645 nfsrpc_advlock(vnode_t vp, off_t size, int op, struct flock *fl, 3646 int reclaim, struct ucred *cred, NFSPROC_T *p, void *id, int flags) 3647 { 3648 struct nfscllockowner *lp; 3649 struct nfsclclient *clp; 3650 struct nfsfh *nfhp; 3651 struct nfsrv_descript nfsd, *nd = &nfsd; 3652 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 3653 u_int64_t off, len; 3654 off_t start, end; 3655 u_int32_t clidrev = 0; 3656 int error = 0, newone = 0, expireret = 0, retrycnt, donelocally; 3657 int callcnt, dorpc; 3658 3659 /* 3660 * Convert the flock structure into a start and end and do POSIX 3661 * bounds checking. 3662 */ 3663 switch (fl->l_whence) { 3664 case SEEK_SET: 3665 case SEEK_CUR: 3666 /* 3667 * Caller is responsible for adding any necessary offset 3668 * when SEEK_CUR is used. 3669 */ 3670 start = fl->l_start; 3671 off = fl->l_start; 3672 break; 3673 case SEEK_END: 3674 start = size + fl->l_start; 3675 off = size + fl->l_start; 3676 break; 3677 default: 3678 return (EINVAL); 3679 }; 3680 if (start < 0) 3681 return (EINVAL); 3682 if (fl->l_len != 0) { 3683 end = start + fl->l_len - 1; 3684 if (end < start) 3685 return (EINVAL); 3686 } 3687 3688 len = fl->l_len; 3689 if (len == 0) 3690 len = NFS64BITSSET; 3691 retrycnt = 0; 3692 do { 3693 nd->nd_repstat = 0; 3694 if (op == F_GETLK) { 3695 error = nfscl_getcl(vnode_mount(vp), cred, p, 1, &clp); 3696 if (error) 3697 return (error); 3698 error = nfscl_lockt(vp, clp, off, len, fl, p, id, flags); 3699 if (!error) { 3700 clidrev = clp->nfsc_clientidrev; 3701 error = nfsrpc_lockt(nd, vp, clp, off, len, fl, cred, 3702 p, id, flags); 3703 } else if (error == -1) { 3704 error = 0; 3705 } 3706 nfscl_clientrelease(clp); 3707 } else if (op == F_UNLCK && fl->l_type == F_UNLCK) { 3708 /* 3709 * We must loop around for all lockowner cases. 3710 */ 3711 callcnt = 0; 3712 error = nfscl_getcl(vnode_mount(vp), cred, p, 1, &clp); 3713 if (error) 3714 return (error); 3715 do { 3716 error = nfscl_relbytelock(vp, off, len, cred, p, callcnt, 3717 clp, id, flags, &lp, &dorpc); 3718 /* 3719 * If it returns a NULL lp, we're done. 3720 */ 3721 if (lp == NULL) { 3722 if (callcnt == 0) 3723 nfscl_clientrelease(clp); 3724 else 3725 nfscl_releasealllocks(clp, vp, p, id, flags); 3726 return (error); 3727 } 3728 if (nmp->nm_clp != NULL) 3729 clidrev = nmp->nm_clp->nfsc_clientidrev; 3730 else 3731 clidrev = 0; 3732 /* 3733 * If the server doesn't support Posix lock semantics, 3734 * only allow locks on the entire file, since it won't 3735 * handle overlapping byte ranges. 3736 * There might still be a problem when a lock 3737 * upgrade/downgrade (read<->write) occurs, since the 3738 * server "might" expect an unlock first? 3739 */ 3740 if (dorpc && (lp->nfsl_open->nfso_posixlock || 3741 (off == 0 && len == NFS64BITSSET))) { 3742 /* 3743 * Since the lock records will go away, we must 3744 * wait for grace and delay here. 3745 */ 3746 do { 3747 error = nfsrpc_locku(nd, nmp, lp, off, len, 3748 NFSV4LOCKT_READ, cred, p, 0); 3749 if ((nd->nd_repstat == NFSERR_GRACE || 3750 nd->nd_repstat == NFSERR_DELAY) && 3751 error == 0) 3752 (void) nfs_catnap(PZERO, (int)nd->nd_repstat, 3753 "nfs_advlock"); 3754 } while ((nd->nd_repstat == NFSERR_GRACE || 3755 nd->nd_repstat == NFSERR_DELAY) && error == 0); 3756 } 3757 callcnt++; 3758 } while (error == 0 && nd->nd_repstat == 0); 3759 nfscl_releasealllocks(clp, vp, p, id, flags); 3760 } else if (op == F_SETLK) { 3761 error = nfscl_getbytelock(vp, off, len, fl->l_type, cred, p, 3762 NULL, 0, id, flags, NULL, NULL, &lp, &newone, &donelocally); 3763 if (error || donelocally) { 3764 return (error); 3765 } 3766 if (nmp->nm_clp != NULL) 3767 clidrev = nmp->nm_clp->nfsc_clientidrev; 3768 else 3769 clidrev = 0; 3770 nfhp = VTONFS(vp)->n_fhp; 3771 if (!lp->nfsl_open->nfso_posixlock && 3772 (off != 0 || len != NFS64BITSSET)) { 3773 error = EINVAL; 3774 } else { 3775 error = nfsrpc_lock(nd, nmp, vp, nfhp->nfh_fh, 3776 nfhp->nfh_len, lp, newone, reclaim, off, 3777 len, fl->l_type, cred, p, 0); 3778 } 3779 if (!error) 3780 error = nd->nd_repstat; 3781 nfscl_lockrelease(lp, error, newone); 3782 } else { 3783 error = EINVAL; 3784 } 3785 if (!error) 3786 error = nd->nd_repstat; 3787 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 3788 error == NFSERR_STALEDONTRECOVER || 3789 error == NFSERR_STALECLIENTID || error == NFSERR_DELAY || 3790 error == NFSERR_BADSESSION) { 3791 (void) nfs_catnap(PZERO, error, "nfs_advlock"); 3792 } else if ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) 3793 && clidrev != 0) { 3794 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 3795 retrycnt++; 3796 } 3797 } while (error == NFSERR_GRACE || 3798 error == NFSERR_STALECLIENTID || error == NFSERR_DELAY || 3799 error == NFSERR_STALEDONTRECOVER || error == NFSERR_STALESTATEID || 3800 error == NFSERR_BADSESSION || 3801 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 3802 expireret == 0 && clidrev != 0 && retrycnt < 4)); 3803 if (error && retrycnt >= 4) 3804 error = EIO; 3805 return (error); 3806 } 3807 3808 /* 3809 * The lower level routine for the LockT case. 3810 */ 3811 APPLESTATIC int 3812 nfsrpc_lockt(struct nfsrv_descript *nd, vnode_t vp, 3813 struct nfsclclient *clp, u_int64_t off, u_int64_t len, struct flock *fl, 3814 struct ucred *cred, NFSPROC_T *p, void *id, int flags) 3815 { 3816 u_int32_t *tl; 3817 int error, type, size; 3818 uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX]; 3819 struct nfsnode *np; 3820 struct nfsmount *nmp; 3821 3822 nmp = VFSTONFS(vp->v_mount); 3823 NFSCL_REQSTART(nd, NFSPROC_LOCKT, vp); 3824 NFSM_BUILD(tl, u_int32_t *, 7 * NFSX_UNSIGNED); 3825 if (fl->l_type == F_RDLCK) 3826 *tl++ = txdr_unsigned(NFSV4LOCKT_READ); 3827 else 3828 *tl++ = txdr_unsigned(NFSV4LOCKT_WRITE); 3829 txdr_hyper(off, tl); 3830 tl += 2; 3831 txdr_hyper(len, tl); 3832 tl += 2; 3833 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0]; 3834 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1]; 3835 nfscl_filllockowner(id, own, flags); 3836 np = VTONFS(vp); 3837 NFSBCOPY(np->n_fhp->nfh_fh, &own[NFSV4CL_LOCKNAMELEN], 3838 np->n_fhp->nfh_len); 3839 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + np->n_fhp->nfh_len); 3840 error = nfscl_request(nd, vp, p, cred, NULL); 3841 if (error) 3842 return (error); 3843 if (nd->nd_repstat == 0) { 3844 fl->l_type = F_UNLCK; 3845 } else if (nd->nd_repstat == NFSERR_DENIED) { 3846 nd->nd_repstat = 0; 3847 fl->l_whence = SEEK_SET; 3848 NFSM_DISSECT(tl, u_int32_t *, 8 * NFSX_UNSIGNED); 3849 fl->l_start = fxdr_hyper(tl); 3850 tl += 2; 3851 len = fxdr_hyper(tl); 3852 tl += 2; 3853 if (len == NFS64BITSSET) 3854 fl->l_len = 0; 3855 else 3856 fl->l_len = len; 3857 type = fxdr_unsigned(int, *tl++); 3858 if (type == NFSV4LOCKT_WRITE) 3859 fl->l_type = F_WRLCK; 3860 else 3861 fl->l_type = F_RDLCK; 3862 /* 3863 * XXX For now, I have no idea what to do with the 3864 * conflicting lock_owner, so I'll just set the pid == 0 3865 * and skip over the lock_owner. 3866 */ 3867 fl->l_pid = (pid_t)0; 3868 tl += 2; 3869 size = fxdr_unsigned(int, *tl); 3870 if (size < 0 || size > NFSV4_OPAQUELIMIT) 3871 error = EBADRPC; 3872 if (!error) 3873 error = nfsm_advance(nd, NFSM_RNDUP(size), -1); 3874 } else if (nd->nd_repstat == NFSERR_STALECLIENTID || 3875 nd->nd_repstat == NFSERR_BADSESSION) 3876 nfscl_initiate_recovery(clp); 3877 nfsmout: 3878 mbuf_freem(nd->nd_mrep); 3879 return (error); 3880 } 3881 3882 /* 3883 * Lower level function that performs the LockU RPC. 3884 */ 3885 static int 3886 nfsrpc_locku(struct nfsrv_descript *nd, struct nfsmount *nmp, 3887 struct nfscllockowner *lp, u_int64_t off, u_int64_t len, 3888 u_int32_t type, struct ucred *cred, NFSPROC_T *p, int syscred) 3889 { 3890 u_int32_t *tl; 3891 int error; 3892 3893 nfscl_reqstart(nd, NFSPROC_LOCKU, nmp, lp->nfsl_open->nfso_fh, 3894 lp->nfsl_open->nfso_fhlen, NULL, NULL); 3895 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 6 * NFSX_UNSIGNED); 3896 *tl++ = txdr_unsigned(type); 3897 *tl = txdr_unsigned(lp->nfsl_seqid); 3898 if (nfstest_outofseq && 3899 (arc4random() % nfstest_outofseq) == 0) 3900 *tl = txdr_unsigned(lp->nfsl_seqid + 1); 3901 tl++; 3902 if (NFSHASNFSV4N(nmp)) 3903 *tl++ = 0; 3904 else 3905 *tl++ = lp->nfsl_stateid.seqid; 3906 *tl++ = lp->nfsl_stateid.other[0]; 3907 *tl++ = lp->nfsl_stateid.other[1]; 3908 *tl++ = lp->nfsl_stateid.other[2]; 3909 txdr_hyper(off, tl); 3910 tl += 2; 3911 txdr_hyper(len, tl); 3912 if (syscred) 3913 nd->nd_flag |= ND_USEGSSNAME; 3914 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 3915 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 3916 NFSCL_INCRSEQID(lp->nfsl_seqid, nd); 3917 if (error) 3918 return (error); 3919 if (nd->nd_repstat == 0) { 3920 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 3921 lp->nfsl_stateid.seqid = *tl++; 3922 lp->nfsl_stateid.other[0] = *tl++; 3923 lp->nfsl_stateid.other[1] = *tl++; 3924 lp->nfsl_stateid.other[2] = *tl; 3925 } else if (nd->nd_repstat == NFSERR_STALESTATEID || 3926 nd->nd_repstat == NFSERR_BADSESSION) 3927 nfscl_initiate_recovery(lp->nfsl_open->nfso_own->nfsow_clp); 3928 nfsmout: 3929 mbuf_freem(nd->nd_mrep); 3930 return (error); 3931 } 3932 3933 /* 3934 * The actual Lock RPC. 3935 */ 3936 APPLESTATIC int 3937 nfsrpc_lock(struct nfsrv_descript *nd, struct nfsmount *nmp, vnode_t vp, 3938 u_int8_t *nfhp, int fhlen, struct nfscllockowner *lp, int newone, 3939 int reclaim, u_int64_t off, u_int64_t len, short type, struct ucred *cred, 3940 NFSPROC_T *p, int syscred) 3941 { 3942 u_int32_t *tl; 3943 int error, size; 3944 uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX]; 3945 3946 nfscl_reqstart(nd, NFSPROC_LOCK, nmp, nfhp, fhlen, NULL, NULL); 3947 NFSM_BUILD(tl, u_int32_t *, 7 * NFSX_UNSIGNED); 3948 if (type == F_RDLCK) 3949 *tl++ = txdr_unsigned(NFSV4LOCKT_READ); 3950 else 3951 *tl++ = txdr_unsigned(NFSV4LOCKT_WRITE); 3952 *tl++ = txdr_unsigned(reclaim); 3953 txdr_hyper(off, tl); 3954 tl += 2; 3955 txdr_hyper(len, tl); 3956 tl += 2; 3957 if (newone) { 3958 *tl = newnfs_true; 3959 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 3960 2 * NFSX_UNSIGNED + NFSX_HYPER); 3961 *tl++ = txdr_unsigned(lp->nfsl_open->nfso_own->nfsow_seqid); 3962 if (NFSHASNFSV4N(nmp)) 3963 *tl++ = 0; 3964 else 3965 *tl++ = lp->nfsl_open->nfso_stateid.seqid; 3966 *tl++ = lp->nfsl_open->nfso_stateid.other[0]; 3967 *tl++ = lp->nfsl_open->nfso_stateid.other[1]; 3968 *tl++ = lp->nfsl_open->nfso_stateid.other[2]; 3969 *tl++ = txdr_unsigned(lp->nfsl_seqid); 3970 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0]; 3971 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1]; 3972 NFSBCOPY(lp->nfsl_owner, own, NFSV4CL_LOCKNAMELEN); 3973 NFSBCOPY(nfhp, &own[NFSV4CL_LOCKNAMELEN], fhlen); 3974 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + fhlen); 3975 } else { 3976 *tl = newnfs_false; 3977 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + NFSX_UNSIGNED); 3978 if (NFSHASNFSV4N(nmp)) 3979 *tl++ = 0; 3980 else 3981 *tl++ = lp->nfsl_stateid.seqid; 3982 *tl++ = lp->nfsl_stateid.other[0]; 3983 *tl++ = lp->nfsl_stateid.other[1]; 3984 *tl++ = lp->nfsl_stateid.other[2]; 3985 *tl = txdr_unsigned(lp->nfsl_seqid); 3986 if (nfstest_outofseq && 3987 (arc4random() % nfstest_outofseq) == 0) 3988 *tl = txdr_unsigned(lp->nfsl_seqid + 1); 3989 } 3990 if (syscred) 3991 nd->nd_flag |= ND_USEGSSNAME; 3992 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, vp, p, cred, 3993 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 3994 if (error) 3995 return (error); 3996 if (newone) 3997 NFSCL_INCRSEQID(lp->nfsl_open->nfso_own->nfsow_seqid, nd); 3998 NFSCL_INCRSEQID(lp->nfsl_seqid, nd); 3999 if (nd->nd_repstat == 0) { 4000 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 4001 lp->nfsl_stateid.seqid = *tl++; 4002 lp->nfsl_stateid.other[0] = *tl++; 4003 lp->nfsl_stateid.other[1] = *tl++; 4004 lp->nfsl_stateid.other[2] = *tl; 4005 } else if (nd->nd_repstat == NFSERR_DENIED) { 4006 NFSM_DISSECT(tl, u_int32_t *, 8 * NFSX_UNSIGNED); 4007 size = fxdr_unsigned(int, *(tl + 7)); 4008 if (size < 0 || size > NFSV4_OPAQUELIMIT) 4009 error = EBADRPC; 4010 if (!error) 4011 error = nfsm_advance(nd, NFSM_RNDUP(size), -1); 4012 } else if (nd->nd_repstat == NFSERR_STALESTATEID || 4013 nd->nd_repstat == NFSERR_BADSESSION) 4014 nfscl_initiate_recovery(lp->nfsl_open->nfso_own->nfsow_clp); 4015 nfsmout: 4016 mbuf_freem(nd->nd_mrep); 4017 return (error); 4018 } 4019 4020 /* 4021 * nfs statfs rpc 4022 * (always called with the vp for the mount point) 4023 */ 4024 APPLESTATIC int 4025 nfsrpc_statfs(vnode_t vp, struct nfsstatfs *sbp, struct nfsfsinfo *fsp, 4026 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 4027 void *stuff) 4028 { 4029 u_int32_t *tl = NULL; 4030 struct nfsrv_descript nfsd, *nd = &nfsd; 4031 struct nfsmount *nmp; 4032 nfsattrbit_t attrbits; 4033 int error; 4034 4035 *attrflagp = 0; 4036 nmp = VFSTONFS(vnode_mount(vp)); 4037 if (NFSHASNFSV4(nmp)) { 4038 /* 4039 * For V4, you actually do a getattr. 4040 */ 4041 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp); 4042 NFSSTATFS_GETATTRBIT(&attrbits); 4043 (void) nfsrv_putattrbit(nd, &attrbits); 4044 nd->nd_flag |= ND_USEGSSNAME; 4045 error = nfscl_request(nd, vp, p, cred, stuff); 4046 if (error) 4047 return (error); 4048 if (nd->nd_repstat == 0) { 4049 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, 4050 NULL, NULL, sbp, fsp, NULL, 0, NULL, NULL, NULL, p, 4051 cred); 4052 if (!error) { 4053 nmp->nm_fsid[0] = nap->na_filesid[0]; 4054 nmp->nm_fsid[1] = nap->na_filesid[1]; 4055 NFSSETHASSETFSID(nmp); 4056 *attrflagp = 1; 4057 } 4058 } else { 4059 error = nd->nd_repstat; 4060 } 4061 if (error) 4062 goto nfsmout; 4063 } else { 4064 NFSCL_REQSTART(nd, NFSPROC_FSSTAT, vp); 4065 error = nfscl_request(nd, vp, p, cred, stuff); 4066 if (error) 4067 return (error); 4068 if (nd->nd_flag & ND_NFSV3) { 4069 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 4070 if (error) 4071 goto nfsmout; 4072 } 4073 if (nd->nd_repstat) { 4074 error = nd->nd_repstat; 4075 goto nfsmout; 4076 } 4077 NFSM_DISSECT(tl, u_int32_t *, 4078 NFSX_STATFS(nd->nd_flag & ND_NFSV3)); 4079 } 4080 if (NFSHASNFSV3(nmp)) { 4081 sbp->sf_tbytes = fxdr_hyper(tl); tl += 2; 4082 sbp->sf_fbytes = fxdr_hyper(tl); tl += 2; 4083 sbp->sf_abytes = fxdr_hyper(tl); tl += 2; 4084 sbp->sf_tfiles = fxdr_hyper(tl); tl += 2; 4085 sbp->sf_ffiles = fxdr_hyper(tl); tl += 2; 4086 sbp->sf_afiles = fxdr_hyper(tl); tl += 2; 4087 sbp->sf_invarsec = fxdr_unsigned(u_int32_t, *tl); 4088 } else if (NFSHASNFSV4(nmp) == 0) { 4089 sbp->sf_tsize = fxdr_unsigned(u_int32_t, *tl++); 4090 sbp->sf_bsize = fxdr_unsigned(u_int32_t, *tl++); 4091 sbp->sf_blocks = fxdr_unsigned(u_int32_t, *tl++); 4092 sbp->sf_bfree = fxdr_unsigned(u_int32_t, *tl++); 4093 sbp->sf_bavail = fxdr_unsigned(u_int32_t, *tl); 4094 } 4095 nfsmout: 4096 mbuf_freem(nd->nd_mrep); 4097 return (error); 4098 } 4099 4100 /* 4101 * nfs pathconf rpc 4102 */ 4103 APPLESTATIC int 4104 nfsrpc_pathconf(vnode_t vp, struct nfsv3_pathconf *pc, 4105 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 4106 void *stuff) 4107 { 4108 struct nfsrv_descript nfsd, *nd = &nfsd; 4109 struct nfsmount *nmp; 4110 u_int32_t *tl; 4111 nfsattrbit_t attrbits; 4112 int error; 4113 4114 *attrflagp = 0; 4115 nmp = VFSTONFS(vnode_mount(vp)); 4116 if (NFSHASNFSV4(nmp)) { 4117 /* 4118 * For V4, you actually do a getattr. 4119 */ 4120 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp); 4121 NFSPATHCONF_GETATTRBIT(&attrbits); 4122 (void) nfsrv_putattrbit(nd, &attrbits); 4123 nd->nd_flag |= ND_USEGSSNAME; 4124 error = nfscl_request(nd, vp, p, cred, stuff); 4125 if (error) 4126 return (error); 4127 if (nd->nd_repstat == 0) { 4128 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, 4129 pc, NULL, NULL, NULL, NULL, 0, NULL, NULL, NULL, p, 4130 cred); 4131 if (!error) 4132 *attrflagp = 1; 4133 } else { 4134 error = nd->nd_repstat; 4135 } 4136 } else { 4137 NFSCL_REQSTART(nd, NFSPROC_PATHCONF, vp); 4138 error = nfscl_request(nd, vp, p, cred, stuff); 4139 if (error) 4140 return (error); 4141 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 4142 if (nd->nd_repstat && !error) 4143 error = nd->nd_repstat; 4144 if (!error) { 4145 NFSM_DISSECT(tl, u_int32_t *, NFSX_V3PATHCONF); 4146 pc->pc_linkmax = fxdr_unsigned(u_int32_t, *tl++); 4147 pc->pc_namemax = fxdr_unsigned(u_int32_t, *tl++); 4148 pc->pc_notrunc = fxdr_unsigned(u_int32_t, *tl++); 4149 pc->pc_chownrestricted = 4150 fxdr_unsigned(u_int32_t, *tl++); 4151 pc->pc_caseinsensitive = 4152 fxdr_unsigned(u_int32_t, *tl++); 4153 pc->pc_casepreserving = fxdr_unsigned(u_int32_t, *tl); 4154 } 4155 } 4156 nfsmout: 4157 mbuf_freem(nd->nd_mrep); 4158 return (error); 4159 } 4160 4161 /* 4162 * nfs version 3 fsinfo rpc call 4163 */ 4164 APPLESTATIC int 4165 nfsrpc_fsinfo(vnode_t vp, struct nfsfsinfo *fsp, struct ucred *cred, 4166 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 4167 { 4168 u_int32_t *tl; 4169 struct nfsrv_descript nfsd, *nd = &nfsd; 4170 int error; 4171 4172 *attrflagp = 0; 4173 NFSCL_REQSTART(nd, NFSPROC_FSINFO, vp); 4174 error = nfscl_request(nd, vp, p, cred, stuff); 4175 if (error) 4176 return (error); 4177 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 4178 if (nd->nd_repstat && !error) 4179 error = nd->nd_repstat; 4180 if (!error) { 4181 NFSM_DISSECT(tl, u_int32_t *, NFSX_V3FSINFO); 4182 fsp->fs_rtmax = fxdr_unsigned(u_int32_t, *tl++); 4183 fsp->fs_rtpref = fxdr_unsigned(u_int32_t, *tl++); 4184 fsp->fs_rtmult = fxdr_unsigned(u_int32_t, *tl++); 4185 fsp->fs_wtmax = fxdr_unsigned(u_int32_t, *tl++); 4186 fsp->fs_wtpref = fxdr_unsigned(u_int32_t, *tl++); 4187 fsp->fs_wtmult = fxdr_unsigned(u_int32_t, *tl++); 4188 fsp->fs_dtpref = fxdr_unsigned(u_int32_t, *tl++); 4189 fsp->fs_maxfilesize = fxdr_hyper(tl); 4190 tl += 2; 4191 fxdr_nfsv3time(tl, &fsp->fs_timedelta); 4192 tl += 2; 4193 fsp->fs_properties = fxdr_unsigned(u_int32_t, *tl); 4194 } 4195 nfsmout: 4196 mbuf_freem(nd->nd_mrep); 4197 return (error); 4198 } 4199 4200 /* 4201 * This function performs the Renew RPC. 4202 */ 4203 APPLESTATIC int 4204 nfsrpc_renew(struct nfsclclient *clp, struct nfsclds *dsp, struct ucred *cred, 4205 NFSPROC_T *p) 4206 { 4207 u_int32_t *tl; 4208 struct nfsrv_descript nfsd; 4209 struct nfsrv_descript *nd = &nfsd; 4210 struct nfsmount *nmp; 4211 int error; 4212 struct nfssockreq *nrp; 4213 4214 nmp = clp->nfsc_nmp; 4215 if (nmp == NULL) 4216 return (0); 4217 nfscl_reqstart(nd, NFSPROC_RENEW, nmp, NULL, 0, NULL, 4218 &dsp->nfsclds_sess); 4219 if (!NFSHASNFSV4N(nmp)) { 4220 /* NFSv4.1 just uses a Sequence Op and not a Renew. */ 4221 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 4222 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0]; 4223 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1]; 4224 } 4225 nrp = dsp->nfsclds_sockp; 4226 if (nrp == NULL) 4227 /* If NULL, use the MDS socket. */ 4228 nrp = &nmp->nm_sockreq; 4229 nd->nd_flag |= ND_USEGSSNAME; 4230 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred, 4231 NFS_PROG, NFS_VER4, NULL, 1, NULL, &dsp->nfsclds_sess); 4232 if (error) 4233 return (error); 4234 error = nd->nd_repstat; 4235 mbuf_freem(nd->nd_mrep); 4236 return (error); 4237 } 4238 4239 /* 4240 * This function performs the Releaselockowner RPC. 4241 */ 4242 APPLESTATIC int 4243 nfsrpc_rellockown(struct nfsmount *nmp, struct nfscllockowner *lp, 4244 uint8_t *fh, int fhlen, struct ucred *cred, NFSPROC_T *p) 4245 { 4246 struct nfsrv_descript nfsd, *nd = &nfsd; 4247 u_int32_t *tl; 4248 int error; 4249 uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX]; 4250 4251 if (NFSHASNFSV4N(nmp)) { 4252 /* For NFSv4.1, do a FreeStateID. */ 4253 nfscl_reqstart(nd, NFSPROC_FREESTATEID, nmp, NULL, 0, NULL, 4254 NULL); 4255 nfsm_stateidtom(nd, &lp->nfsl_stateid, NFSSTATEID_PUTSTATEID); 4256 } else { 4257 nfscl_reqstart(nd, NFSPROC_RELEASELCKOWN, nmp, NULL, 0, NULL, 4258 NULL); 4259 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 4260 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0]; 4261 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1]; 4262 NFSBCOPY(lp->nfsl_owner, own, NFSV4CL_LOCKNAMELEN); 4263 NFSBCOPY(fh, &own[NFSV4CL_LOCKNAMELEN], fhlen); 4264 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + fhlen); 4265 } 4266 nd->nd_flag |= ND_USEGSSNAME; 4267 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4268 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4269 if (error) 4270 return (error); 4271 error = nd->nd_repstat; 4272 mbuf_freem(nd->nd_mrep); 4273 return (error); 4274 } 4275 4276 /* 4277 * This function performs the Compound to get the mount pt FH. 4278 */ 4279 APPLESTATIC int 4280 nfsrpc_getdirpath(struct nfsmount *nmp, u_char *dirpath, struct ucred *cred, 4281 NFSPROC_T *p) 4282 { 4283 u_int32_t *tl; 4284 struct nfsrv_descript nfsd; 4285 struct nfsrv_descript *nd = &nfsd; 4286 u_char *cp, *cp2; 4287 int error, cnt, len, setnil; 4288 u_int32_t *opcntp; 4289 4290 nfscl_reqstart(nd, NFSPROC_PUTROOTFH, nmp, NULL, 0, &opcntp, NULL); 4291 cp = dirpath; 4292 cnt = 0; 4293 do { 4294 setnil = 0; 4295 while (*cp == '/') 4296 cp++; 4297 cp2 = cp; 4298 while (*cp2 != '\0' && *cp2 != '/') 4299 cp2++; 4300 if (*cp2 == '/') { 4301 setnil = 1; 4302 *cp2 = '\0'; 4303 } 4304 if (cp2 != cp) { 4305 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 4306 *tl = txdr_unsigned(NFSV4OP_LOOKUP); 4307 nfsm_strtom(nd, cp, strlen(cp)); 4308 cnt++; 4309 } 4310 if (setnil) 4311 *cp2++ = '/'; 4312 cp = cp2; 4313 } while (*cp != '\0'); 4314 if (NFSHASNFSV4N(nmp)) 4315 /* Has a Sequence Op done by nfscl_reqstart(). */ 4316 *opcntp = txdr_unsigned(3 + cnt); 4317 else 4318 *opcntp = txdr_unsigned(2 + cnt); 4319 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 4320 *tl = txdr_unsigned(NFSV4OP_GETFH); 4321 nd->nd_flag |= ND_USEGSSNAME; 4322 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4323 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4324 if (error) 4325 return (error); 4326 if (nd->nd_repstat == 0) { 4327 NFSM_DISSECT(tl, u_int32_t *, (3 + 2 * cnt) * NFSX_UNSIGNED); 4328 tl += (2 + 2 * cnt); 4329 if ((len = fxdr_unsigned(int, *tl)) <= 0 || 4330 len > NFSX_FHMAX) { 4331 nd->nd_repstat = NFSERR_BADXDR; 4332 } else { 4333 nd->nd_repstat = nfsrv_mtostr(nd, nmp->nm_fh, len); 4334 if (nd->nd_repstat == 0) 4335 nmp->nm_fhsize = len; 4336 } 4337 } 4338 error = nd->nd_repstat; 4339 nfsmout: 4340 mbuf_freem(nd->nd_mrep); 4341 return (error); 4342 } 4343 4344 /* 4345 * This function performs the Delegreturn RPC. 4346 */ 4347 APPLESTATIC int 4348 nfsrpc_delegreturn(struct nfscldeleg *dp, struct ucred *cred, 4349 struct nfsmount *nmp, NFSPROC_T *p, int syscred) 4350 { 4351 u_int32_t *tl; 4352 struct nfsrv_descript nfsd; 4353 struct nfsrv_descript *nd = &nfsd; 4354 int error; 4355 4356 nfscl_reqstart(nd, NFSPROC_DELEGRETURN, nmp, dp->nfsdl_fh, 4357 dp->nfsdl_fhlen, NULL, NULL); 4358 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 4359 if (NFSHASNFSV4N(nmp)) 4360 *tl++ = 0; 4361 else 4362 *tl++ = dp->nfsdl_stateid.seqid; 4363 *tl++ = dp->nfsdl_stateid.other[0]; 4364 *tl++ = dp->nfsdl_stateid.other[1]; 4365 *tl = dp->nfsdl_stateid.other[2]; 4366 if (syscred) 4367 nd->nd_flag |= ND_USEGSSNAME; 4368 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4369 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4370 if (error) 4371 return (error); 4372 error = nd->nd_repstat; 4373 mbuf_freem(nd->nd_mrep); 4374 return (error); 4375 } 4376 4377 /* 4378 * nfs getacl call. 4379 */ 4380 APPLESTATIC int 4381 nfsrpc_getacl(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 4382 struct acl *aclp, void *stuff) 4383 { 4384 struct nfsrv_descript nfsd, *nd = &nfsd; 4385 int error; 4386 nfsattrbit_t attrbits; 4387 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 4388 4389 if (nfsrv_useacl == 0 || !NFSHASNFSV4(nmp)) 4390 return (EOPNOTSUPP); 4391 NFSCL_REQSTART(nd, NFSPROC_GETACL, vp); 4392 NFSZERO_ATTRBIT(&attrbits); 4393 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_ACL); 4394 (void) nfsrv_putattrbit(nd, &attrbits); 4395 error = nfscl_request(nd, vp, p, cred, stuff); 4396 if (error) 4397 return (error); 4398 if (!nd->nd_repstat) 4399 error = nfsv4_loadattr(nd, vp, NULL, NULL, NULL, 0, NULL, 4400 NULL, NULL, NULL, aclp, 0, NULL, NULL, NULL, p, cred); 4401 else 4402 error = nd->nd_repstat; 4403 mbuf_freem(nd->nd_mrep); 4404 return (error); 4405 } 4406 4407 /* 4408 * nfs setacl call. 4409 */ 4410 APPLESTATIC int 4411 nfsrpc_setacl(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 4412 struct acl *aclp, void *stuff) 4413 { 4414 int error; 4415 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 4416 4417 if (nfsrv_useacl == 0 || !NFSHASNFSV4(nmp)) 4418 return (EOPNOTSUPP); 4419 error = nfsrpc_setattr(vp, NULL, aclp, cred, p, NULL, NULL, stuff); 4420 return (error); 4421 } 4422 4423 /* 4424 * nfs setacl call. 4425 */ 4426 static int 4427 nfsrpc_setaclrpc(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 4428 struct acl *aclp, nfsv4stateid_t *stateidp, void *stuff) 4429 { 4430 struct nfsrv_descript nfsd, *nd = &nfsd; 4431 int error; 4432 nfsattrbit_t attrbits; 4433 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 4434 4435 if (!NFSHASNFSV4(nmp)) 4436 return (EOPNOTSUPP); 4437 NFSCL_REQSTART(nd, NFSPROC_SETACL, vp); 4438 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 4439 NFSZERO_ATTRBIT(&attrbits); 4440 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_ACL); 4441 (void) nfsv4_fillattr(nd, vnode_mount(vp), vp, aclp, NULL, NULL, 0, 4442 &attrbits, NULL, NULL, 0, 0, 0, 0, (uint64_t)0); 4443 error = nfscl_request(nd, vp, p, cred, stuff); 4444 if (error) 4445 return (error); 4446 /* Don't care about the pre/postop attributes */ 4447 mbuf_freem(nd->nd_mrep); 4448 return (nd->nd_repstat); 4449 } 4450 4451 /* 4452 * Do the NFSv4.1 Exchange ID. 4453 */ 4454 int 4455 nfsrpc_exchangeid(struct nfsmount *nmp, struct nfsclclient *clp, 4456 struct nfssockreq *nrp, uint32_t exchflags, struct nfsclds **dspp, 4457 struct ucred *cred, NFSPROC_T *p) 4458 { 4459 uint32_t *tl, v41flags; 4460 struct nfsrv_descript nfsd; 4461 struct nfsrv_descript *nd = &nfsd; 4462 struct nfsclds *dsp; 4463 struct timespec verstime; 4464 int error, len; 4465 4466 *dspp = NULL; 4467 nfscl_reqstart(nd, NFSPROC_EXCHANGEID, nmp, NULL, 0, NULL, NULL); 4468 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_UNSIGNED); 4469 *tl++ = txdr_unsigned(nfsboottime.tv_sec); /* Client owner */ 4470 *tl = txdr_unsigned(clp->nfsc_rev); 4471 (void) nfsm_strtom(nd, clp->nfsc_id, clp->nfsc_idlen); 4472 4473 NFSM_BUILD(tl, uint32_t *, 3 * NFSX_UNSIGNED); 4474 *tl++ = txdr_unsigned(exchflags); 4475 *tl++ = txdr_unsigned(NFSV4EXCH_SP4NONE); 4476 4477 /* Set the implementation id4 */ 4478 *tl = txdr_unsigned(1); 4479 (void) nfsm_strtom(nd, "freebsd.org", strlen("freebsd.org")); 4480 (void) nfsm_strtom(nd, version, strlen(version)); 4481 NFSM_BUILD(tl, uint32_t *, NFSX_V4TIME); 4482 verstime.tv_sec = 1293840000; /* Jan 1, 2011 */ 4483 verstime.tv_nsec = 0; 4484 txdr_nfsv4time(&verstime, tl); 4485 nd->nd_flag |= ND_USEGSSNAME; 4486 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred, 4487 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4488 NFSCL_DEBUG(1, "exchangeid err=%d reps=%d\n", error, 4489 (int)nd->nd_repstat); 4490 if (error != 0) 4491 return (error); 4492 if (nd->nd_repstat == 0) { 4493 NFSM_DISSECT(tl, uint32_t *, 6 * NFSX_UNSIGNED + NFSX_HYPER); 4494 len = fxdr_unsigned(int, *(tl + 7)); 4495 if (len < 0 || len > NFSV4_OPAQUELIMIT) { 4496 error = NFSERR_BADXDR; 4497 goto nfsmout; 4498 } 4499 dsp = malloc(sizeof(struct nfsclds) + len, M_NFSCLDS, 4500 M_WAITOK | M_ZERO); 4501 dsp->nfsclds_expire = NFSD_MONOSEC + clp->nfsc_renew; 4502 dsp->nfsclds_servownlen = len; 4503 dsp->nfsclds_sess.nfsess_clientid.lval[0] = *tl++; 4504 dsp->nfsclds_sess.nfsess_clientid.lval[1] = *tl++; 4505 dsp->nfsclds_sess.nfsess_sequenceid = 4506 fxdr_unsigned(uint32_t, *tl++); 4507 v41flags = fxdr_unsigned(uint32_t, *tl); 4508 if ((v41flags & NFSV4EXCH_USEPNFSMDS) != 0 && 4509 NFSHASPNFSOPT(nmp)) { 4510 NFSCL_DEBUG(1, "set PNFS\n"); 4511 NFSLOCKMNT(nmp); 4512 nmp->nm_state |= NFSSTA_PNFS; 4513 NFSUNLOCKMNT(nmp); 4514 dsp->nfsclds_flags |= NFSCLDS_MDS; 4515 } 4516 if ((v41flags & NFSV4EXCH_USEPNFSDS) != 0) 4517 dsp->nfsclds_flags |= NFSCLDS_DS; 4518 if (len > 0) 4519 nd->nd_repstat = nfsrv_mtostr(nd, 4520 dsp->nfsclds_serverown, len); 4521 if (nd->nd_repstat == 0) { 4522 mtx_init(&dsp->nfsclds_mtx, "nfsds", NULL, MTX_DEF); 4523 mtx_init(&dsp->nfsclds_sess.nfsess_mtx, "nfssession", 4524 NULL, MTX_DEF); 4525 nfscl_initsessionslots(&dsp->nfsclds_sess); 4526 *dspp = dsp; 4527 } else 4528 free(dsp, M_NFSCLDS); 4529 } 4530 error = nd->nd_repstat; 4531 nfsmout: 4532 mbuf_freem(nd->nd_mrep); 4533 return (error); 4534 } 4535 4536 /* 4537 * Do the NFSv4.1 Create Session. 4538 */ 4539 int 4540 nfsrpc_createsession(struct nfsmount *nmp, struct nfsclsession *sep, 4541 struct nfssockreq *nrp, uint32_t sequenceid, int mds, struct ucred *cred, 4542 NFSPROC_T *p) 4543 { 4544 uint32_t crflags, *tl; 4545 struct nfsrv_descript nfsd; 4546 struct nfsrv_descript *nd = &nfsd; 4547 int error, irdcnt; 4548 4549 nfscl_reqstart(nd, NFSPROC_CREATESESSION, nmp, NULL, 0, NULL, NULL); 4550 NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED); 4551 *tl++ = sep->nfsess_clientid.lval[0]; 4552 *tl++ = sep->nfsess_clientid.lval[1]; 4553 *tl++ = txdr_unsigned(sequenceid); 4554 crflags = (NFSMNT_RDONLY(nmp->nm_mountp) ? 0 : NFSV4CRSESS_PERSIST); 4555 if (nfscl_enablecallb != 0 && nfs_numnfscbd > 0) 4556 crflags |= NFSV4CRSESS_CONNBACKCHAN; 4557 *tl = txdr_unsigned(crflags); 4558 4559 /* Fill in fore channel attributes. */ 4560 NFSM_BUILD(tl, uint32_t *, 7 * NFSX_UNSIGNED); 4561 *tl++ = 0; /* Header pad size */ 4562 *tl++ = txdr_unsigned(100000); /* Max request size */ 4563 *tl++ = txdr_unsigned(100000); /* Max response size */ 4564 *tl++ = txdr_unsigned(4096); /* Max response size cached */ 4565 *tl++ = txdr_unsigned(20); /* Max operations */ 4566 *tl++ = txdr_unsigned(64); /* Max slots */ 4567 *tl = 0; /* No rdma ird */ 4568 4569 /* Fill in back channel attributes. */ 4570 NFSM_BUILD(tl, uint32_t *, 7 * NFSX_UNSIGNED); 4571 *tl++ = 0; /* Header pad size */ 4572 *tl++ = txdr_unsigned(10000); /* Max request size */ 4573 *tl++ = txdr_unsigned(10000); /* Max response size */ 4574 *tl++ = txdr_unsigned(4096); /* Max response size cached */ 4575 *tl++ = txdr_unsigned(4); /* Max operations */ 4576 *tl++ = txdr_unsigned(NFSV4_CBSLOTS); /* Max slots */ 4577 *tl = 0; /* No rdma ird */ 4578 4579 NFSM_BUILD(tl, uint32_t *, 8 * NFSX_UNSIGNED); 4580 *tl++ = txdr_unsigned(NFS_CALLBCKPROG); /* Call back prog # */ 4581 4582 /* Allow AUTH_SYS callbacks as uid, gid == 0. */ 4583 *tl++ = txdr_unsigned(1); /* Auth_sys only */ 4584 *tl++ = txdr_unsigned(AUTH_SYS); /* AUTH_SYS type */ 4585 *tl++ = txdr_unsigned(nfsboottime.tv_sec); /* time stamp */ 4586 *tl++ = 0; /* Null machine name */ 4587 *tl++ = 0; /* Uid == 0 */ 4588 *tl++ = 0; /* Gid == 0 */ 4589 *tl = 0; /* No additional gids */ 4590 nd->nd_flag |= ND_USEGSSNAME; 4591 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred, NFS_PROG, 4592 NFS_VER4, NULL, 1, NULL, NULL); 4593 if (error != 0) 4594 return (error); 4595 if (nd->nd_repstat == 0) { 4596 NFSM_DISSECT(tl, uint32_t *, NFSX_V4SESSIONID + 4597 2 * NFSX_UNSIGNED); 4598 bcopy(tl, sep->nfsess_sessionid, NFSX_V4SESSIONID); 4599 tl += NFSX_V4SESSIONID / NFSX_UNSIGNED; 4600 sep->nfsess_sequenceid = fxdr_unsigned(uint32_t, *tl++); 4601 crflags = fxdr_unsigned(uint32_t, *tl); 4602 if ((crflags & NFSV4CRSESS_PERSIST) != 0 && mds != 0) { 4603 NFSLOCKMNT(nmp); 4604 nmp->nm_state |= NFSSTA_SESSPERSIST; 4605 NFSUNLOCKMNT(nmp); 4606 } 4607 4608 /* Get the fore channel slot count. */ 4609 NFSM_DISSECT(tl, uint32_t *, 7 * NFSX_UNSIGNED); 4610 tl += 3; /* Skip the other counts. */ 4611 sep->nfsess_maxcache = fxdr_unsigned(int, *tl++); 4612 tl++; 4613 sep->nfsess_foreslots = fxdr_unsigned(uint16_t, *tl++); 4614 NFSCL_DEBUG(4, "fore slots=%d\n", (int)sep->nfsess_foreslots); 4615 irdcnt = fxdr_unsigned(int, *tl); 4616 if (irdcnt > 0) 4617 NFSM_DISSECT(tl, uint32_t *, irdcnt * NFSX_UNSIGNED); 4618 4619 /* and the back channel slot count. */ 4620 NFSM_DISSECT(tl, uint32_t *, 7 * NFSX_UNSIGNED); 4621 tl += 5; 4622 sep->nfsess_backslots = fxdr_unsigned(uint16_t, *tl); 4623 NFSCL_DEBUG(4, "back slots=%d\n", (int)sep->nfsess_backslots); 4624 } 4625 error = nd->nd_repstat; 4626 nfsmout: 4627 mbuf_freem(nd->nd_mrep); 4628 return (error); 4629 } 4630 4631 /* 4632 * Do the NFSv4.1 Destroy Session. 4633 */ 4634 int 4635 nfsrpc_destroysession(struct nfsmount *nmp, struct nfsclclient *clp, 4636 struct ucred *cred, NFSPROC_T *p) 4637 { 4638 uint32_t *tl; 4639 struct nfsrv_descript nfsd; 4640 struct nfsrv_descript *nd = &nfsd; 4641 int error; 4642 4643 nfscl_reqstart(nd, NFSPROC_DESTROYSESSION, nmp, NULL, 0, NULL, NULL); 4644 NFSM_BUILD(tl, uint32_t *, NFSX_V4SESSIONID); 4645 bcopy(NFSMNT_MDSSESSION(nmp)->nfsess_sessionid, tl, NFSX_V4SESSIONID); 4646 nd->nd_flag |= ND_USEGSSNAME; 4647 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4648 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4649 if (error != 0) 4650 return (error); 4651 error = nd->nd_repstat; 4652 mbuf_freem(nd->nd_mrep); 4653 return (error); 4654 } 4655 4656 /* 4657 * Do the NFSv4.1 Destroy Client. 4658 */ 4659 int 4660 nfsrpc_destroyclient(struct nfsmount *nmp, struct nfsclclient *clp, 4661 struct ucred *cred, NFSPROC_T *p) 4662 { 4663 uint32_t *tl; 4664 struct nfsrv_descript nfsd; 4665 struct nfsrv_descript *nd = &nfsd; 4666 int error; 4667 4668 nfscl_reqstart(nd, NFSPROC_DESTROYCLIENT, nmp, NULL, 0, NULL, NULL); 4669 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_UNSIGNED); 4670 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0]; 4671 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1]; 4672 nd->nd_flag |= ND_USEGSSNAME; 4673 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4674 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4675 if (error != 0) 4676 return (error); 4677 error = nd->nd_repstat; 4678 mbuf_freem(nd->nd_mrep); 4679 return (error); 4680 } 4681 4682 /* 4683 * Do the NFSv4.1 LayoutGet. 4684 */ 4685 int 4686 nfsrpc_layoutget(struct nfsmount *nmp, uint8_t *fhp, int fhlen, int iomode, 4687 uint64_t offset, uint64_t len, uint64_t minlen, int layoutlen, 4688 nfsv4stateid_t *stateidp, int *retonclosep, struct nfsclflayouthead *flhp, 4689 struct ucred *cred, NFSPROC_T *p, void *stuff) 4690 { 4691 uint32_t *tl; 4692 struct nfsrv_descript nfsd, *nd = &nfsd; 4693 struct nfsfh *nfhp; 4694 struct nfsclflayout *flp, *prevflp, *tflp; 4695 int cnt, error, gotiomode, fhcnt, nfhlen, i, j; 4696 uint8_t *cp; 4697 uint64_t retlen; 4698 4699 flp = NULL; 4700 gotiomode = -1; 4701 nfscl_reqstart(nd, NFSPROC_LAYOUTGET, nmp, fhp, fhlen, NULL, NULL); 4702 NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED + 3 * NFSX_HYPER + 4703 NFSX_STATEID); 4704 *tl++ = newnfs_false; /* Don't signal availability. */ 4705 *tl++ = txdr_unsigned(NFSLAYOUT_NFSV4_1_FILES); 4706 *tl++ = txdr_unsigned(iomode); 4707 txdr_hyper(offset, tl); 4708 tl += 2; 4709 txdr_hyper(len, tl); 4710 tl += 2; 4711 txdr_hyper(minlen, tl); 4712 tl += 2; 4713 *tl++ = txdr_unsigned(stateidp->seqid); 4714 NFSCL_DEBUG(4, "layget seq=%d\n", (int)stateidp->seqid); 4715 *tl++ = stateidp->other[0]; 4716 *tl++ = stateidp->other[1]; 4717 *tl++ = stateidp->other[2]; 4718 *tl = txdr_unsigned(layoutlen); 4719 nd->nd_flag |= ND_USEGSSNAME; 4720 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4721 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4722 if (error != 0) 4723 return (error); 4724 if (nd->nd_repstat == 0) { 4725 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED + NFSX_STATEID); 4726 if (*tl++ != 0) 4727 *retonclosep = 1; 4728 else 4729 *retonclosep = 0; 4730 stateidp->seqid = fxdr_unsigned(uint32_t, *tl++); 4731 NFSCL_DEBUG(4, "retoncls=%d stseq=%d\n", *retonclosep, 4732 (int)stateidp->seqid); 4733 stateidp->other[0] = *tl++; 4734 stateidp->other[1] = *tl++; 4735 stateidp->other[2] = *tl++; 4736 cnt = fxdr_unsigned(int, *tl); 4737 NFSCL_DEBUG(4, "layg cnt=%d\n", cnt); 4738 if (cnt <= 0 || cnt > 10000) { 4739 /* Don't accept more than 10000 layouts in reply. */ 4740 error = NFSERR_BADXDR; 4741 goto nfsmout; 4742 } 4743 for (i = 0; i < cnt; i++) { 4744 /* Dissect all the way to the file handle cnt. */ 4745 NFSM_DISSECT(tl, uint32_t *, 3 * NFSX_HYPER + 4746 6 * NFSX_UNSIGNED + NFSX_V4DEVICEID); 4747 fhcnt = fxdr_unsigned(int, *(tl + 11 + 4748 NFSX_V4DEVICEID / NFSX_UNSIGNED)); 4749 NFSCL_DEBUG(4, "fhcnt=%d\n", fhcnt); 4750 if (fhcnt < 0 || fhcnt > 100) { 4751 /* Don't accept more than 100 file handles. */ 4752 error = NFSERR_BADXDR; 4753 goto nfsmout; 4754 } 4755 if (fhcnt > 1) 4756 flp = malloc(sizeof(*flp) + (fhcnt - 1) * 4757 sizeof(struct nfsfh *), 4758 M_NFSFLAYOUT, M_WAITOK); 4759 else 4760 flp = malloc(sizeof(*flp), 4761 M_NFSFLAYOUT, M_WAITOK); 4762 flp->nfsfl_flags = 0; 4763 flp->nfsfl_fhcnt = 0; 4764 flp->nfsfl_devp = NULL; 4765 flp->nfsfl_off = fxdr_hyper(tl); tl += 2; 4766 retlen = fxdr_hyper(tl); tl += 2; 4767 if (flp->nfsfl_off + retlen < flp->nfsfl_off) 4768 flp->nfsfl_end = UINT64_MAX - flp->nfsfl_off; 4769 else 4770 flp->nfsfl_end = flp->nfsfl_off + retlen; 4771 flp->nfsfl_iomode = fxdr_unsigned(int, *tl++); 4772 if (gotiomode == -1) 4773 gotiomode = flp->nfsfl_iomode; 4774 NFSCL_DEBUG(4, "layg reqiom=%d retiom=%d\n", iomode, 4775 (int)flp->nfsfl_iomode); 4776 if (fxdr_unsigned(int, *tl++) != 4777 NFSLAYOUT_NFSV4_1_FILES) { 4778 printf("NFSv4.1: got non-files layout\n"); 4779 error = NFSERR_BADXDR; 4780 goto nfsmout; 4781 } 4782 NFSBCOPY(++tl, flp->nfsfl_dev, NFSX_V4DEVICEID); 4783 tl += (NFSX_V4DEVICEID / NFSX_UNSIGNED); 4784 flp->nfsfl_util = fxdr_unsigned(uint32_t, *tl++); 4785 NFSCL_DEBUG(4, "flutil=0x%x\n", flp->nfsfl_util); 4786 flp->nfsfl_stripe1 = fxdr_unsigned(uint32_t, *tl++); 4787 flp->nfsfl_patoff = fxdr_hyper(tl); tl += 2; 4788 if (fxdr_unsigned(int, *tl) != fhcnt) { 4789 printf("EEK! bad fhcnt\n"); 4790 error = NFSERR_BADXDR; 4791 goto nfsmout; 4792 } 4793 for (j = 0; j < fhcnt; j++) { 4794 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 4795 nfhlen = fxdr_unsigned(int, *tl); 4796 if (nfhlen <= 0 || nfhlen > NFSX_V4FHMAX) { 4797 error = NFSERR_BADXDR; 4798 goto nfsmout; 4799 } 4800 nfhp = malloc(sizeof(*nfhp) + nfhlen - 1, 4801 M_NFSFH, M_WAITOK); 4802 flp->nfsfl_fh[j] = nfhp; 4803 flp->nfsfl_fhcnt++; 4804 nfhp->nfh_len = nfhlen; 4805 NFSM_DISSECT(cp, uint8_t *, NFSM_RNDUP(nfhlen)); 4806 NFSBCOPY(cp, nfhp->nfh_fh, nfhlen); 4807 } 4808 if (flp->nfsfl_iomode == gotiomode) { 4809 /* Keep the list in increasing offset order. */ 4810 tflp = LIST_FIRST(flhp); 4811 prevflp = NULL; 4812 while (tflp != NULL && 4813 tflp->nfsfl_off < flp->nfsfl_off) { 4814 prevflp = tflp; 4815 tflp = LIST_NEXT(tflp, nfsfl_list); 4816 } 4817 if (prevflp == NULL) 4818 LIST_INSERT_HEAD(flhp, flp, nfsfl_list); 4819 else 4820 LIST_INSERT_AFTER(prevflp, flp, 4821 nfsfl_list); 4822 } else { 4823 printf("nfscl_layoutget(): got wrong iomode\n"); 4824 nfscl_freeflayout(flp); 4825 } 4826 flp = NULL; 4827 } 4828 } 4829 if (nd->nd_repstat != 0 && error == 0) 4830 error = nd->nd_repstat; 4831 nfsmout: 4832 if (error != 0 && flp != NULL) 4833 nfscl_freeflayout(flp); 4834 mbuf_freem(nd->nd_mrep); 4835 return (error); 4836 } 4837 4838 /* 4839 * Do the NFSv4.1 Get Device Info. 4840 */ 4841 int 4842 nfsrpc_getdeviceinfo(struct nfsmount *nmp, uint8_t *deviceid, int layouttype, 4843 uint32_t *notifybitsp, struct nfscldevinfo **ndip, struct ucred *cred, 4844 NFSPROC_T *p) 4845 { 4846 uint32_t cnt, *tl; 4847 struct nfsrv_descript nfsd; 4848 struct nfsrv_descript *nd = &nfsd; 4849 struct sockaddr_storage ss; 4850 struct nfsclds *dsp = NULL, **dspp; 4851 struct nfscldevinfo *ndi; 4852 int addrcnt, bitcnt, error, i, isudp, j, pos, safilled, stripecnt; 4853 uint8_t stripeindex; 4854 4855 *ndip = NULL; 4856 ndi = NULL; 4857 nfscl_reqstart(nd, NFSPROC_GETDEVICEINFO, nmp, NULL, 0, NULL, NULL); 4858 NFSM_BUILD(tl, uint32_t *, NFSX_V4DEVICEID + 3 * NFSX_UNSIGNED); 4859 NFSBCOPY(deviceid, tl, NFSX_V4DEVICEID); 4860 tl += (NFSX_V4DEVICEID / NFSX_UNSIGNED); 4861 *tl++ = txdr_unsigned(layouttype); 4862 *tl++ = txdr_unsigned(100000); 4863 if (notifybitsp != NULL && *notifybitsp != 0) { 4864 *tl = txdr_unsigned(1); /* One word of bits. */ 4865 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 4866 *tl = txdr_unsigned(*notifybitsp); 4867 } else 4868 *tl = txdr_unsigned(0); 4869 nd->nd_flag |= ND_USEGSSNAME; 4870 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4871 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4872 if (error != 0) 4873 return (error); 4874 if (nd->nd_repstat == 0) { 4875 NFSM_DISSECT(tl, uint32_t *, 3 * NFSX_UNSIGNED); 4876 if (layouttype != fxdr_unsigned(int, *tl++)) 4877 printf("EEK! devinfo layout type not same!\n"); 4878 stripecnt = fxdr_unsigned(int, *++tl); 4879 NFSCL_DEBUG(4, "stripecnt=%d\n", stripecnt); 4880 if (stripecnt < 1 || stripecnt > 4096) { 4881 printf("NFS devinfo stripecnt %d: out of range\n", 4882 stripecnt); 4883 error = NFSERR_BADXDR; 4884 goto nfsmout; 4885 } 4886 NFSM_DISSECT(tl, uint32_t *, (stripecnt + 1) * NFSX_UNSIGNED); 4887 addrcnt = fxdr_unsigned(int, *(tl + stripecnt)); 4888 NFSCL_DEBUG(4, "addrcnt=%d\n", addrcnt); 4889 if (addrcnt < 1 || addrcnt > 128) { 4890 printf("NFS devinfo addrcnt %d: out of range\n", 4891 addrcnt); 4892 error = NFSERR_BADXDR; 4893 goto nfsmout; 4894 } 4895 4896 /* 4897 * Now we know how many stripe indices and addresses, so 4898 * we can allocate the structure the correct size. 4899 */ 4900 i = (stripecnt * sizeof(uint8_t)) / sizeof(struct nfsclds *) 4901 + 1; 4902 NFSCL_DEBUG(4, "stripeindices=%d\n", i); 4903 ndi = malloc(sizeof(*ndi) + (addrcnt + i) * 4904 sizeof(struct nfsclds *), M_NFSDEVINFO, M_WAITOK | M_ZERO); 4905 NFSBCOPY(deviceid, ndi->nfsdi_deviceid, NFSX_V4DEVICEID); 4906 ndi->nfsdi_refcnt = 0; 4907 ndi->nfsdi_stripecnt = stripecnt; 4908 ndi->nfsdi_addrcnt = addrcnt; 4909 /* Fill in the stripe indices. */ 4910 for (i = 0; i < stripecnt; i++) { 4911 stripeindex = fxdr_unsigned(uint8_t, *tl++); 4912 NFSCL_DEBUG(4, "stripeind=%d\n", stripeindex); 4913 if (stripeindex >= addrcnt) { 4914 printf("NFS devinfo stripeindex %d: too big\n", 4915 (int)stripeindex); 4916 error = NFSERR_BADXDR; 4917 goto nfsmout; 4918 } 4919 nfsfldi_setstripeindex(ndi, i, stripeindex); 4920 } 4921 4922 /* Now, dissect the server address(es). */ 4923 safilled = 0; 4924 for (i = 0; i < addrcnt; i++) { 4925 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 4926 cnt = fxdr_unsigned(uint32_t, *tl); 4927 if (cnt == 0) { 4928 printf("NFS devinfo 0 len addrlist\n"); 4929 error = NFSERR_BADXDR; 4930 goto nfsmout; 4931 } 4932 dspp = nfsfldi_addr(ndi, i); 4933 pos = arc4random() % cnt; /* Choose one. */ 4934 safilled = 0; 4935 for (j = 0; j < cnt; j++) { 4936 error = nfsv4_getipaddr(nd, &ss, &isudp); 4937 if (error != 0 && error != EPERM) { 4938 error = NFSERR_BADXDR; 4939 goto nfsmout; 4940 } 4941 if (error == 0 && isudp == 0) { 4942 /* 4943 * The algorithm is: 4944 * - use "pos" entry if it is of the 4945 * same af_family or none of them 4946 * is of the same af_family 4947 * else 4948 * - use the first one of the same 4949 * af_family. 4950 */ 4951 if ((safilled == 0 && ss.ss_family == 4952 nmp->nm_nam->sa_family) || 4953 (j == pos && 4954 (safilled == 0 || ss.ss_family == 4955 nmp->nm_nam->sa_family)) || 4956 (safilled == 1 && ss.ss_family == 4957 nmp->nm_nam->sa_family)) { 4958 error = nfsrpc_fillsa(nmp, &ss, 4959 &dsp, p); 4960 if (error == 0) { 4961 *dspp = dsp; 4962 if (ss.ss_family == 4963 nmp->nm_nam->sa_family) 4964 safilled = 2; 4965 else 4966 safilled = 1; 4967 } 4968 } 4969 } 4970 } 4971 if (safilled == 0) 4972 break; 4973 } 4974 4975 /* And the notify bits. */ 4976 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 4977 if (safilled != 0) { 4978 bitcnt = fxdr_unsigned(int, *tl); 4979 if (bitcnt > 0) { 4980 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 4981 if (notifybitsp != NULL) 4982 *notifybitsp = 4983 fxdr_unsigned(uint32_t, *tl); 4984 } 4985 *ndip = ndi; 4986 } else 4987 error = EPERM; 4988 } 4989 if (nd->nd_repstat != 0) 4990 error = nd->nd_repstat; 4991 nfsmout: 4992 if (error != 0 && ndi != NULL) 4993 nfscl_freedevinfo(ndi); 4994 mbuf_freem(nd->nd_mrep); 4995 return (error); 4996 } 4997 4998 /* 4999 * Do the NFSv4.1 LayoutCommit. 5000 */ 5001 int 5002 nfsrpc_layoutcommit(struct nfsmount *nmp, uint8_t *fh, int fhlen, int reclaim, 5003 uint64_t off, uint64_t len, uint64_t lastbyte, nfsv4stateid_t *stateidp, 5004 int layouttype, int layoutupdatecnt, uint8_t *layp, struct ucred *cred, 5005 NFSPROC_T *p, void *stuff) 5006 { 5007 uint32_t *tl; 5008 struct nfsrv_descript nfsd, *nd = &nfsd; 5009 int error, outcnt, i; 5010 uint8_t *cp; 5011 5012 nfscl_reqstart(nd, NFSPROC_LAYOUTCOMMIT, nmp, fh, fhlen, NULL, NULL); 5013 NFSM_BUILD(tl, uint32_t *, 5 * NFSX_UNSIGNED + 3 * NFSX_HYPER + 5014 NFSX_STATEID); 5015 txdr_hyper(off, tl); 5016 tl += 2; 5017 txdr_hyper(len, tl); 5018 tl += 2; 5019 if (reclaim != 0) 5020 *tl++ = newnfs_true; 5021 else 5022 *tl++ = newnfs_false; 5023 *tl++ = txdr_unsigned(stateidp->seqid); 5024 *tl++ = stateidp->other[0]; 5025 *tl++ = stateidp->other[1]; 5026 *tl++ = stateidp->other[2]; 5027 *tl++ = newnfs_true; 5028 if (lastbyte < off) 5029 lastbyte = off; 5030 else if (lastbyte >= (off + len)) 5031 lastbyte = off + len - 1; 5032 txdr_hyper(lastbyte, tl); 5033 tl += 2; 5034 *tl++ = newnfs_false; 5035 *tl++ = txdr_unsigned(layouttype); 5036 *tl = txdr_unsigned(layoutupdatecnt); 5037 if (layoutupdatecnt > 0) { 5038 KASSERT(layouttype != NFSLAYOUT_NFSV4_1_FILES, 5039 ("Must be nil for Files Layout")); 5040 outcnt = NFSM_RNDUP(layoutupdatecnt); 5041 NFSM_BUILD(cp, uint8_t *, outcnt); 5042 NFSBCOPY(layp, cp, layoutupdatecnt); 5043 cp += layoutupdatecnt; 5044 for (i = 0; i < (outcnt - layoutupdatecnt); i++) 5045 *cp++ = 0x0; 5046 } 5047 nd->nd_flag |= ND_USEGSSNAME; 5048 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5049 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5050 if (error != 0) 5051 return (error); 5052 error = nd->nd_repstat; 5053 mbuf_freem(nd->nd_mrep); 5054 return (error); 5055 } 5056 5057 /* 5058 * Do the NFSv4.1 LayoutReturn. 5059 */ 5060 int 5061 nfsrpc_layoutreturn(struct nfsmount *nmp, uint8_t *fh, int fhlen, int reclaim, 5062 int layouttype, uint32_t iomode, int layoutreturn, uint64_t offset, 5063 uint64_t len, nfsv4stateid_t *stateidp, int layoutcnt, uint32_t *layp, 5064 struct ucred *cred, NFSPROC_T *p, void *stuff) 5065 { 5066 uint32_t *tl; 5067 struct nfsrv_descript nfsd, *nd = &nfsd; 5068 int error, outcnt, i; 5069 uint8_t *cp; 5070 5071 nfscl_reqstart(nd, NFSPROC_LAYOUTRETURN, nmp, fh, fhlen, NULL, NULL); 5072 NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED); 5073 if (reclaim != 0) 5074 *tl++ = newnfs_true; 5075 else 5076 *tl++ = newnfs_false; 5077 *tl++ = txdr_unsigned(layouttype); 5078 *tl++ = txdr_unsigned(iomode); 5079 *tl = txdr_unsigned(layoutreturn); 5080 if (layoutreturn == NFSLAYOUTRETURN_FILE) { 5081 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_HYPER + NFSX_STATEID + 5082 NFSX_UNSIGNED); 5083 txdr_hyper(offset, tl); 5084 tl += 2; 5085 txdr_hyper(len, tl); 5086 tl += 2; 5087 NFSCL_DEBUG(4, "layoutret stseq=%d\n", (int)stateidp->seqid); 5088 *tl++ = txdr_unsigned(stateidp->seqid); 5089 *tl++ = stateidp->other[0]; 5090 *tl++ = stateidp->other[1]; 5091 *tl++ = stateidp->other[2]; 5092 *tl = txdr_unsigned(layoutcnt); 5093 if (layoutcnt > 0) { 5094 outcnt = NFSM_RNDUP(layoutcnt); 5095 NFSM_BUILD(cp, uint8_t *, outcnt); 5096 NFSBCOPY(layp, cp, layoutcnt); 5097 cp += layoutcnt; 5098 for (i = 0; i < (outcnt - layoutcnt); i++) 5099 *cp++ = 0x0; 5100 } 5101 } 5102 nd->nd_flag |= ND_USEGSSNAME; 5103 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5104 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5105 if (error != 0) 5106 return (error); 5107 if (nd->nd_repstat == 0) { 5108 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 5109 if (*tl != 0) { 5110 NFSM_DISSECT(tl, uint32_t *, NFSX_STATEID); 5111 stateidp->seqid = fxdr_unsigned(uint32_t, *tl++); 5112 stateidp->other[0] = *tl++; 5113 stateidp->other[1] = *tl++; 5114 stateidp->other[2] = *tl; 5115 } 5116 } else 5117 error = nd->nd_repstat; 5118 nfsmout: 5119 mbuf_freem(nd->nd_mrep); 5120 return (error); 5121 } 5122 5123 /* 5124 * Acquire a layout and devinfo, if possible. The caller must have acquired 5125 * a reference count on the nfsclclient structure before calling this. 5126 * Return the layout in lypp with a reference count on it, if successful. 5127 */ 5128 static int 5129 nfsrpc_getlayout(struct nfsmount *nmp, vnode_t vp, struct nfsfh *nfhp, 5130 int iomode, uint32_t *notifybitsp, nfsv4stateid_t *stateidp, uint64_t off, 5131 struct nfscllayout **lypp, struct ucred *cred, NFSPROC_T *p) 5132 { 5133 struct nfscllayout *lyp; 5134 struct nfsclflayout *flp, *tflp; 5135 struct nfscldevinfo *dip; 5136 struct nfsclflayouthead flh; 5137 int error = 0, islocked, layoutlen, recalled, retonclose; 5138 nfsv4stateid_t stateid; 5139 5140 *lypp = NULL; 5141 /* 5142 * If lyp is returned non-NULL, there will be a refcnt (shared lock) 5143 * on it, iff flp != NULL or a lock (exclusive lock) on it iff 5144 * flp == NULL. 5145 */ 5146 lyp = nfscl_getlayout(nmp->nm_clp, nfhp->nfh_fh, nfhp->nfh_len, 5147 off, &flp, &recalled); 5148 islocked = 0; 5149 if (lyp == NULL || flp == NULL) { 5150 if (recalled != 0) 5151 return (EIO); 5152 LIST_INIT(&flh); 5153 layoutlen = NFSMNT_MDSSESSION(nmp)->nfsess_maxcache - 5154 (NFSX_STATEID + 3 * NFSX_UNSIGNED); 5155 if (lyp == NULL) { 5156 stateid.seqid = 0; 5157 stateid.other[0] = stateidp->other[0]; 5158 stateid.other[1] = stateidp->other[1]; 5159 stateid.other[2] = stateidp->other[2]; 5160 error = nfsrpc_layoutget(nmp, nfhp->nfh_fh, 5161 nfhp->nfh_len, iomode, (uint64_t)0, INT64_MAX, 5162 (uint64_t)0, layoutlen, &stateid, &retonclose, 5163 &flh, cred, p, NULL); 5164 } else { 5165 islocked = 1; 5166 stateid.seqid = lyp->nfsly_stateid.seqid; 5167 stateid.other[0] = lyp->nfsly_stateid.other[0]; 5168 stateid.other[1] = lyp->nfsly_stateid.other[1]; 5169 stateid.other[2] = lyp->nfsly_stateid.other[2]; 5170 error = nfsrpc_layoutget(nmp, nfhp->nfh_fh, 5171 nfhp->nfh_len, iomode, off, INT64_MAX, 5172 (uint64_t)0, layoutlen, &stateid, &retonclose, 5173 &flh, cred, p, NULL); 5174 } 5175 if (error == 0) 5176 LIST_FOREACH(tflp, &flh, nfsfl_list) { 5177 error = nfscl_adddevinfo(nmp, NULL, tflp); 5178 if (error != 0) { 5179 error = nfsrpc_getdeviceinfo(nmp, 5180 tflp->nfsfl_dev, 5181 NFSLAYOUT_NFSV4_1_FILES, 5182 notifybitsp, &dip, cred, p); 5183 if (error != 0) 5184 break; 5185 error = nfscl_adddevinfo(nmp, dip, 5186 tflp); 5187 if (error != 0) 5188 printf( 5189 "getlayout: cannot add\n"); 5190 } 5191 } 5192 if (error == 0) { 5193 /* 5194 * nfscl_layout() always returns with the nfsly_lock 5195 * set to a refcnt (shared lock). 5196 */ 5197 error = nfscl_layout(nmp, vp, nfhp->nfh_fh, 5198 nfhp->nfh_len, &stateid, retonclose, &flh, &lyp, 5199 cred, p); 5200 if (error == 0) 5201 *lypp = lyp; 5202 } else if (islocked != 0) 5203 nfsv4_unlock(&lyp->nfsly_lock, 0); 5204 } else 5205 *lypp = lyp; 5206 return (error); 5207 } 5208 5209 /* 5210 * Do a TCP connection plus exchange id and create session. 5211 * If successful, a "struct nfsclds" is linked into the list for the 5212 * mount point and a pointer to it is returned. 5213 */ 5214 static int 5215 nfsrpc_fillsa(struct nfsmount *nmp, struct sockaddr_storage *ssp, 5216 struct nfsclds **dspp, NFSPROC_T *p) 5217 { 5218 struct sockaddr_in *msad, *sad, *ssd; 5219 struct sockaddr_in6 *msad6, *sad6, *ssd6; 5220 struct nfsclclient *clp; 5221 struct nfssockreq *nrp; 5222 struct nfsclds *dsp, *tdsp; 5223 int error; 5224 enum nfsclds_state retv; 5225 uint32_t sequenceid; 5226 5227 KASSERT(nmp->nm_sockreq.nr_cred != NULL, 5228 ("nfsrpc_fillsa: NULL nr_cred")); 5229 NFSLOCKCLSTATE(); 5230 clp = nmp->nm_clp; 5231 NFSUNLOCKCLSTATE(); 5232 if (clp == NULL) 5233 return (EPERM); 5234 if (ssp->ss_family == AF_INET) { 5235 ssd = (struct sockaddr_in *)ssp; 5236 NFSLOCKMNT(nmp); 5237 5238 /* 5239 * Check to see if we already have a session for this 5240 * address that is usable for a DS. 5241 * Note that the MDS's address is in a different place 5242 * than the sessions already acquired for DS's. 5243 */ 5244 msad = (struct sockaddr_in *)nmp->nm_sockreq.nr_nam; 5245 tdsp = TAILQ_FIRST(&nmp->nm_sess); 5246 while (tdsp != NULL) { 5247 if (msad != NULL && msad->sin_family == AF_INET && 5248 ssd->sin_addr.s_addr == msad->sin_addr.s_addr && 5249 ssd->sin_port == msad->sin_port && 5250 (tdsp->nfsclds_flags & NFSCLDS_DS) != 0) { 5251 *dspp = tdsp; 5252 NFSUNLOCKMNT(nmp); 5253 NFSCL_DEBUG(4, "fnd same addr\n"); 5254 return (0); 5255 } 5256 tdsp = TAILQ_NEXT(tdsp, nfsclds_list); 5257 if (tdsp != NULL && tdsp->nfsclds_sockp != NULL) 5258 msad = (struct sockaddr_in *) 5259 tdsp->nfsclds_sockp->nr_nam; 5260 else 5261 msad = NULL; 5262 } 5263 NFSUNLOCKMNT(nmp); 5264 5265 /* No IP address match, so look for new/trunked one. */ 5266 sad = malloc(sizeof(*sad), M_SONAME, M_WAITOK | M_ZERO); 5267 sad->sin_len = sizeof(*sad); 5268 sad->sin_family = AF_INET; 5269 sad->sin_port = ssd->sin_port; 5270 sad->sin_addr.s_addr = ssd->sin_addr.s_addr; 5271 nrp = malloc(sizeof(*nrp), M_NFSSOCKREQ, M_WAITOK | M_ZERO); 5272 nrp->nr_nam = (struct sockaddr *)sad; 5273 } else if (ssp->ss_family == AF_INET6) { 5274 ssd6 = (struct sockaddr_in6 *)ssp; 5275 NFSLOCKMNT(nmp); 5276 5277 /* 5278 * Check to see if we already have a session for this 5279 * address that is usable for a DS. 5280 * Note that the MDS's address is in a different place 5281 * than the sessions already acquired for DS's. 5282 */ 5283 msad6 = (struct sockaddr_in6 *)nmp->nm_sockreq.nr_nam; 5284 tdsp = TAILQ_FIRST(&nmp->nm_sess); 5285 while (tdsp != NULL) { 5286 if (msad6 != NULL && msad6->sin6_family == AF_INET6 && 5287 IN6_ARE_ADDR_EQUAL(&ssd6->sin6_addr, 5288 &msad6->sin6_addr) && 5289 ssd6->sin6_port == msad6->sin6_port && 5290 (tdsp->nfsclds_flags & NFSCLDS_DS) != 0) { 5291 *dspp = tdsp; 5292 NFSUNLOCKMNT(nmp); 5293 return (0); 5294 } 5295 tdsp = TAILQ_NEXT(tdsp, nfsclds_list); 5296 if (tdsp != NULL && tdsp->nfsclds_sockp != NULL) 5297 msad6 = (struct sockaddr_in6 *) 5298 tdsp->nfsclds_sockp->nr_nam; 5299 else 5300 msad6 = NULL; 5301 } 5302 NFSUNLOCKMNT(nmp); 5303 5304 /* No IP address match, so look for new/trunked one. */ 5305 sad6 = malloc(sizeof(*sad6), M_SONAME, M_WAITOK | M_ZERO); 5306 sad6->sin6_len = sizeof(*sad6); 5307 sad6->sin6_family = AF_INET6; 5308 sad6->sin6_port = ssd6->sin6_port; 5309 NFSBCOPY(&ssd6->sin6_addr, &sad6->sin6_addr, 5310 sizeof(struct in6_addr)); 5311 nrp = malloc(sizeof(*nrp), M_NFSSOCKREQ, M_WAITOK | M_ZERO); 5312 nrp->nr_nam = (struct sockaddr *)sad6; 5313 } else 5314 return (EPERM); 5315 5316 nrp->nr_sotype = SOCK_STREAM; 5317 mtx_init(&nrp->nr_mtx, "nfssock", NULL, MTX_DEF); 5318 nrp->nr_prog = NFS_PROG; 5319 nrp->nr_vers = NFS_VER4; 5320 5321 /* 5322 * Use the credentials that were used for the mount, which are 5323 * in nmp->nm_sockreq.nr_cred for newnfs_connect() etc. 5324 * Ref. counting the credentials with crhold() is probably not 5325 * necessary, since nm_sockreq.nr_cred won't be crfree()'d until 5326 * unmount, but I did it anyhow. 5327 */ 5328 nrp->nr_cred = crhold(nmp->nm_sockreq.nr_cred); 5329 error = newnfs_connect(nmp, nrp, NULL, p, 0); 5330 NFSCL_DEBUG(3, "DS connect=%d\n", error); 5331 5332 /* Now, do the exchangeid and create session. */ 5333 if (error == 0) 5334 error = nfsrpc_exchangeid(nmp, clp, nrp, NFSV4EXCH_USEPNFSDS, 5335 &dsp, nrp->nr_cred, p); 5336 NFSCL_DEBUG(3, "DS exchangeid=%d\n", error); 5337 if (error == 0) { 5338 dsp->nfsclds_sockp = nrp; 5339 NFSLOCKMNT(nmp); 5340 retv = nfscl_getsameserver(nmp, dsp, &tdsp); 5341 NFSCL_DEBUG(3, "getsame ret=%d\n", retv); 5342 if (retv == NFSDSP_USETHISSESSION) { 5343 NFSUNLOCKMNT(nmp); 5344 /* 5345 * If there is already a session for this server, 5346 * use it. 5347 */ 5348 (void)newnfs_disconnect(nrp); 5349 nfscl_freenfsclds(dsp); 5350 *dspp = tdsp; 5351 return (0); 5352 } 5353 if (retv == NFSDSP_SEQTHISSESSION) 5354 sequenceid = tdsp->nfsclds_sess.nfsess_sequenceid; 5355 else 5356 sequenceid = dsp->nfsclds_sess.nfsess_sequenceid; 5357 NFSUNLOCKMNT(nmp); 5358 error = nfsrpc_createsession(nmp, &dsp->nfsclds_sess, 5359 nrp, sequenceid, 0, nrp->nr_cred, p); 5360 NFSCL_DEBUG(3, "DS createsess=%d\n", error); 5361 } else { 5362 NFSFREECRED(nrp->nr_cred); 5363 NFSFREEMUTEX(&nrp->nr_mtx); 5364 free(nrp->nr_nam, M_SONAME); 5365 free(nrp, M_NFSSOCKREQ); 5366 } 5367 if (error == 0) { 5368 NFSCL_DEBUG(3, "add DS session\n"); 5369 /* 5370 * Put it at the end of the list. That way the list 5371 * is ordered by when the entry was added. This matters 5372 * since the one done first is the one that should be 5373 * used for sequencid'ing any subsequent create sessions. 5374 */ 5375 NFSLOCKMNT(nmp); 5376 TAILQ_INSERT_TAIL(&nmp->nm_sess, dsp, nfsclds_list); 5377 NFSUNLOCKMNT(nmp); 5378 *dspp = dsp; 5379 } else if (dsp != NULL) 5380 nfscl_freenfsclds(dsp); 5381 return (error); 5382 } 5383 5384 /* 5385 * Do the NFSv4.1 Reclaim Complete. 5386 */ 5387 int 5388 nfsrpc_reclaimcomplete(struct nfsmount *nmp, struct ucred *cred, NFSPROC_T *p) 5389 { 5390 uint32_t *tl; 5391 struct nfsrv_descript nfsd; 5392 struct nfsrv_descript *nd = &nfsd; 5393 int error; 5394 5395 nfscl_reqstart(nd, NFSPROC_RECLAIMCOMPL, nmp, NULL, 0, NULL, NULL); 5396 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 5397 *tl = newnfs_false; 5398 nd->nd_flag |= ND_USEGSSNAME; 5399 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5400 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5401 if (error != 0) 5402 return (error); 5403 error = nd->nd_repstat; 5404 mbuf_freem(nd->nd_mrep); 5405 return (error); 5406 } 5407 5408 /* 5409 * Initialize the slot tables for a session. 5410 */ 5411 static void 5412 nfscl_initsessionslots(struct nfsclsession *sep) 5413 { 5414 int i; 5415 5416 for (i = 0; i < NFSV4_CBSLOTS; i++) { 5417 if (sep->nfsess_cbslots[i].nfssl_reply != NULL) 5418 m_freem(sep->nfsess_cbslots[i].nfssl_reply); 5419 NFSBZERO(&sep->nfsess_cbslots[i], sizeof(struct nfsslot)); 5420 } 5421 for (i = 0; i < 64; i++) 5422 sep->nfsess_slotseq[i] = 0; 5423 sep->nfsess_slots = 0; 5424 } 5425 5426 /* 5427 * Called to try and do an I/O operation via an NFSv4.1 Data Server (DS). 5428 */ 5429 int 5430 nfscl_doiods(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 5431 uint32_t rwaccess, struct ucred *cred, NFSPROC_T *p) 5432 { 5433 struct nfsnode *np = VTONFS(vp); 5434 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 5435 struct nfscllayout *layp; 5436 struct nfscldevinfo *dip; 5437 struct nfsclflayout *rflp; 5438 nfsv4stateid_t stateid; 5439 struct ucred *newcred; 5440 uint64_t lastbyte, len, off, oresid, xfer; 5441 int eof, error, iolaymode, recalled; 5442 void *lckp; 5443 5444 if (!NFSHASPNFS(nmp) || nfscl_enablecallb == 0 || nfs_numnfscbd == 0 || 5445 (np->n_flag & NNOLAYOUT) != 0) 5446 return (EIO); 5447 /* Now, get a reference cnt on the clientid for this mount. */ 5448 if (nfscl_getref(nmp) == 0) 5449 return (EIO); 5450 5451 /* Find an appropriate stateid. */ 5452 newcred = NFSNEWCRED(cred); 5453 error = nfscl_getstateid(vp, np->n_fhp->nfh_fh, np->n_fhp->nfh_len, 5454 rwaccess, 1, newcred, p, &stateid, &lckp); 5455 if (error != 0) { 5456 NFSFREECRED(newcred); 5457 nfscl_relref(nmp); 5458 return (error); 5459 } 5460 /* Search for a layout for this file. */ 5461 off = uiop->uio_offset; 5462 layp = nfscl_getlayout(nmp->nm_clp, np->n_fhp->nfh_fh, 5463 np->n_fhp->nfh_len, off, &rflp, &recalled); 5464 if (layp == NULL || rflp == NULL) { 5465 if (recalled != 0) { 5466 NFSFREECRED(newcred); 5467 nfscl_relref(nmp); 5468 return (EIO); 5469 } 5470 if (layp != NULL) { 5471 nfscl_rellayout(layp, (rflp == NULL) ? 1 : 0); 5472 layp = NULL; 5473 } 5474 /* Try and get a Layout, if it is supported. */ 5475 if (rwaccess == NFSV4OPEN_ACCESSWRITE || 5476 (np->n_flag & NWRITEOPENED) != 0) 5477 iolaymode = NFSLAYOUTIOMODE_RW; 5478 else 5479 iolaymode = NFSLAYOUTIOMODE_READ; 5480 error = nfsrpc_getlayout(nmp, vp, np->n_fhp, iolaymode, 5481 NULL, &stateid, off, &layp, newcred, p); 5482 if (error != 0) { 5483 NFSLOCKNODE(np); 5484 np->n_flag |= NNOLAYOUT; 5485 NFSUNLOCKNODE(np); 5486 if (lckp != NULL) 5487 nfscl_lockderef(lckp); 5488 NFSFREECRED(newcred); 5489 if (layp != NULL) 5490 nfscl_rellayout(layp, 0); 5491 nfscl_relref(nmp); 5492 return (error); 5493 } 5494 } 5495 5496 /* 5497 * Loop around finding a layout that works for the first part of 5498 * this I/O operation, and then call the function that actually 5499 * does the RPC. 5500 */ 5501 eof = 0; 5502 len = (uint64_t)uiop->uio_resid; 5503 while (len > 0 && error == 0 && eof == 0) { 5504 off = uiop->uio_offset; 5505 error = nfscl_findlayoutforio(layp, off, rwaccess, &rflp); 5506 if (error == 0) { 5507 oresid = xfer = (uint64_t)uiop->uio_resid; 5508 if (xfer > (rflp->nfsfl_end - rflp->nfsfl_off)) 5509 xfer = rflp->nfsfl_end - rflp->nfsfl_off; 5510 dip = nfscl_getdevinfo(nmp->nm_clp, rflp->nfsfl_dev, 5511 rflp->nfsfl_devp); 5512 if (dip != NULL) { 5513 error = nfscl_doflayoutio(vp, uiop, iomode, 5514 must_commit, &eof, &stateid, rwaccess, dip, 5515 layp, rflp, off, xfer, newcred, p); 5516 nfscl_reldevinfo(dip); 5517 lastbyte = off + xfer - 1; 5518 if (error == 0) { 5519 NFSLOCKCLSTATE(); 5520 if (lastbyte > layp->nfsly_lastbyte) 5521 layp->nfsly_lastbyte = lastbyte; 5522 NFSUNLOCKCLSTATE(); 5523 } 5524 } else 5525 error = EIO; 5526 if (error == 0) 5527 len -= (oresid - (uint64_t)uiop->uio_resid); 5528 } 5529 } 5530 if (lckp != NULL) 5531 nfscl_lockderef(lckp); 5532 NFSFREECRED(newcred); 5533 nfscl_rellayout(layp, 0); 5534 nfscl_relref(nmp); 5535 return (error); 5536 } 5537 5538 /* 5539 * Find a file layout that will handle the first bytes of the requested 5540 * range and return the information from it needed to to the I/O operation. 5541 */ 5542 int 5543 nfscl_findlayoutforio(struct nfscllayout *lyp, uint64_t off, uint32_t rwaccess, 5544 struct nfsclflayout **retflpp) 5545 { 5546 struct nfsclflayout *flp, *nflp, *rflp; 5547 uint32_t rw; 5548 5549 rflp = NULL; 5550 rw = rwaccess; 5551 /* For reading, do the Read list first and then the Write list. */ 5552 do { 5553 if (rw == NFSV4OPEN_ACCESSREAD) 5554 flp = LIST_FIRST(&lyp->nfsly_flayread); 5555 else 5556 flp = LIST_FIRST(&lyp->nfsly_flayrw); 5557 while (flp != NULL) { 5558 nflp = LIST_NEXT(flp, nfsfl_list); 5559 if (flp->nfsfl_off > off) 5560 break; 5561 if (flp->nfsfl_end > off && 5562 (rflp == NULL || rflp->nfsfl_end < flp->nfsfl_end)) 5563 rflp = flp; 5564 flp = nflp; 5565 } 5566 if (rw == NFSV4OPEN_ACCESSREAD) 5567 rw = NFSV4OPEN_ACCESSWRITE; 5568 else 5569 rw = 0; 5570 } while (rw != 0); 5571 if (rflp != NULL) { 5572 /* This one covers the most bytes starting at off. */ 5573 *retflpp = rflp; 5574 return (0); 5575 } 5576 return (EIO); 5577 } 5578 5579 /* 5580 * Do I/O using an NFSv4.1 file layout. 5581 */ 5582 static int 5583 nfscl_doflayoutio(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 5584 int *eofp, nfsv4stateid_t *stateidp, int rwflag, struct nfscldevinfo *dp, 5585 struct nfscllayout *lyp, struct nfsclflayout *flp, uint64_t off, 5586 uint64_t len, struct ucred *cred, NFSPROC_T *p) 5587 { 5588 uint64_t io_off, rel_off, stripe_unit_size, transfer, xfer; 5589 int commit_thru_mds, error = 0, stripe_index, stripe_pos; 5590 struct nfsnode *np; 5591 struct nfsfh *fhp; 5592 struct nfsclds **dspp; 5593 5594 np = VTONFS(vp); 5595 rel_off = off - flp->nfsfl_patoff; 5596 stripe_unit_size = (flp->nfsfl_util >> 6) & 0x3ffffff; 5597 stripe_pos = (rel_off / stripe_unit_size + flp->nfsfl_stripe1) % 5598 dp->nfsdi_stripecnt; 5599 transfer = stripe_unit_size - (rel_off % stripe_unit_size); 5600 5601 /* Loop around, doing I/O for each stripe unit. */ 5602 while (len > 0 && error == 0) { 5603 stripe_index = nfsfldi_stripeindex(dp, stripe_pos); 5604 dspp = nfsfldi_addr(dp, stripe_index); 5605 if (len > transfer) 5606 xfer = transfer; 5607 else 5608 xfer = len; 5609 if ((flp->nfsfl_util & NFSFLAYUTIL_DENSE) != 0) { 5610 /* Dense layout. */ 5611 if (stripe_pos >= flp->nfsfl_fhcnt) 5612 return (EIO); 5613 fhp = flp->nfsfl_fh[stripe_pos]; 5614 io_off = (rel_off / (stripe_unit_size * 5615 dp->nfsdi_stripecnt)) * stripe_unit_size + 5616 rel_off % stripe_unit_size; 5617 } else { 5618 /* Sparse layout. */ 5619 if (flp->nfsfl_fhcnt > 1) { 5620 if (stripe_index >= flp->nfsfl_fhcnt) 5621 return (EIO); 5622 fhp = flp->nfsfl_fh[stripe_index]; 5623 } else if (flp->nfsfl_fhcnt == 1) 5624 fhp = flp->nfsfl_fh[0]; 5625 else 5626 fhp = np->n_fhp; 5627 io_off = off; 5628 } 5629 if ((flp->nfsfl_util & NFSFLAYUTIL_COMMIT_THRU_MDS) != 0) 5630 commit_thru_mds = 1; 5631 else 5632 commit_thru_mds = 0; 5633 if (rwflag == FREAD) 5634 error = nfsrpc_readds(vp, uiop, stateidp, eofp, *dspp, 5635 io_off, xfer, fhp, cred, p); 5636 else { 5637 error = nfsrpc_writeds(vp, uiop, iomode, must_commit, 5638 stateidp, *dspp, io_off, xfer, fhp, commit_thru_mds, 5639 cred, p); 5640 if (error == 0) { 5641 NFSLOCKCLSTATE(); 5642 lyp->nfsly_flags |= NFSLY_WRITTEN; 5643 NFSUNLOCKCLSTATE(); 5644 } 5645 } 5646 if (error == 0) { 5647 transfer = stripe_unit_size; 5648 stripe_pos = (stripe_pos + 1) % dp->nfsdi_stripecnt; 5649 len -= xfer; 5650 off += xfer; 5651 } 5652 } 5653 return (error); 5654 } 5655 5656 /* 5657 * The actual read RPC done to a DS. 5658 */ 5659 static int 5660 nfsrpc_readds(vnode_t vp, struct uio *uiop, nfsv4stateid_t *stateidp, int *eofp, 5661 struct nfsclds *dsp, uint64_t io_off, int len, struct nfsfh *fhp, 5662 struct ucred *cred, NFSPROC_T *p) 5663 { 5664 uint32_t *tl; 5665 int error, retlen; 5666 struct nfsrv_descript nfsd; 5667 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 5668 struct nfsrv_descript *nd = &nfsd; 5669 struct nfssockreq *nrp; 5670 5671 nd->nd_mrep = NULL; 5672 nfscl_reqstart(nd, NFSPROC_READDS, nmp, fhp->nfh_fh, fhp->nfh_len, 5673 NULL, &dsp->nfsclds_sess); 5674 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSEQIDZERO); 5675 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED * 3); 5676 txdr_hyper(io_off, tl); 5677 *(tl + 2) = txdr_unsigned(len); 5678 nrp = dsp->nfsclds_sockp; 5679 if (nrp == NULL) 5680 /* If NULL, use the MDS socket. */ 5681 nrp = &nmp->nm_sockreq; 5682 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred, 5683 NFS_PROG, NFS_VER4, NULL, 1, NULL, &dsp->nfsclds_sess); 5684 if (error != 0) 5685 return (error); 5686 if (nd->nd_repstat != 0) { 5687 error = nd->nd_repstat; 5688 goto nfsmout; 5689 } 5690 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 5691 *eofp = fxdr_unsigned(int, *tl); 5692 NFSM_STRSIZ(retlen, len); 5693 error = nfsm_mbufuio(nd, uiop, retlen); 5694 nfsmout: 5695 if (nd->nd_mrep != NULL) 5696 mbuf_freem(nd->nd_mrep); 5697 return (error); 5698 } 5699 5700 /* 5701 * The actual write RPC done to a DS. 5702 */ 5703 static int 5704 nfsrpc_writeds(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 5705 nfsv4stateid_t *stateidp, struct nfsclds *dsp, uint64_t io_off, int len, 5706 struct nfsfh *fhp, int commit_thru_mds, struct ucred *cred, NFSPROC_T *p) 5707 { 5708 uint32_t *tl; 5709 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 5710 int error, rlen, commit, committed = NFSWRITE_FILESYNC; 5711 int32_t backup; 5712 struct nfsrv_descript nfsd; 5713 struct nfsrv_descript *nd = &nfsd; 5714 struct nfssockreq *nrp; 5715 5716 KASSERT(uiop->uio_iovcnt == 1, ("nfs: writerpc iovcnt > 1")); 5717 nd->nd_mrep = NULL; 5718 nfscl_reqstart(nd, NFSPROC_WRITEDS, nmp, fhp->nfh_fh, fhp->nfh_len, 5719 NULL, &dsp->nfsclds_sess); 5720 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSEQIDZERO); 5721 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + 2 * NFSX_UNSIGNED); 5722 txdr_hyper(io_off, tl); 5723 tl += 2; 5724 *tl++ = txdr_unsigned(*iomode); 5725 *tl = txdr_unsigned(len); 5726 nfsm_uiombuf(nd, uiop, len); 5727 nrp = dsp->nfsclds_sockp; 5728 if (nrp == NULL) 5729 /* If NULL, use the MDS socket. */ 5730 nrp = &nmp->nm_sockreq; 5731 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred, 5732 NFS_PROG, NFS_VER4, NULL, 1, NULL, &dsp->nfsclds_sess); 5733 if (error != 0) 5734 return (error); 5735 if (nd->nd_repstat != 0) { 5736 /* 5737 * In case the rpc gets retried, roll 5738 * the uio fileds changed by nfsm_uiombuf() 5739 * back. 5740 */ 5741 uiop->uio_offset -= len; 5742 uio_uio_resid_add(uiop, len); 5743 uio_iov_base_add(uiop, -len); 5744 uio_iov_len_add(uiop, len); 5745 error = nd->nd_repstat; 5746 } else { 5747 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED + NFSX_VERF); 5748 rlen = fxdr_unsigned(int, *tl++); 5749 if (rlen == 0) { 5750 error = NFSERR_IO; 5751 goto nfsmout; 5752 } else if (rlen < len) { 5753 backup = len - rlen; 5754 uio_iov_base_add(uiop, -(backup)); 5755 uio_iov_len_add(uiop, backup); 5756 uiop->uio_offset -= backup; 5757 uio_uio_resid_add(uiop, backup); 5758 len = rlen; 5759 } 5760 commit = fxdr_unsigned(int, *tl++); 5761 5762 /* 5763 * Return the lowest committment level 5764 * obtained by any of the RPCs. 5765 */ 5766 if (committed == NFSWRITE_FILESYNC) 5767 committed = commit; 5768 else if (committed == NFSWRITE_DATASYNC && 5769 commit == NFSWRITE_UNSTABLE) 5770 committed = commit; 5771 if (commit_thru_mds != 0) { 5772 NFSLOCKMNT(nmp); 5773 if (!NFSHASWRITEVERF(nmp)) { 5774 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 5775 NFSSETWRITEVERF(nmp); 5776 } else if (NFSBCMP(tl, nmp->nm_verf, NFSX_VERF)) { 5777 *must_commit = 1; 5778 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 5779 } 5780 NFSUNLOCKMNT(nmp); 5781 } else { 5782 NFSLOCKDS(dsp); 5783 if ((dsp->nfsclds_flags & NFSCLDS_HASWRITEVERF) == 0) { 5784 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF); 5785 dsp->nfsclds_flags |= NFSCLDS_HASWRITEVERF; 5786 } else if (NFSBCMP(tl, dsp->nfsclds_verf, NFSX_VERF)) { 5787 *must_commit = 1; 5788 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF); 5789 } 5790 NFSUNLOCKDS(dsp); 5791 } 5792 } 5793 nfsmout: 5794 if (nd->nd_mrep != NULL) 5795 mbuf_freem(nd->nd_mrep); 5796 *iomode = committed; 5797 if (nd->nd_repstat != 0 && error == 0) 5798 error = nd->nd_repstat; 5799 return (error); 5800 } 5801 5802 /* 5803 * Free up the nfsclds structure. 5804 */ 5805 void 5806 nfscl_freenfsclds(struct nfsclds *dsp) 5807 { 5808 int i; 5809 5810 if (dsp == NULL) 5811 return; 5812 if (dsp->nfsclds_sockp != NULL) { 5813 NFSFREECRED(dsp->nfsclds_sockp->nr_cred); 5814 NFSFREEMUTEX(&dsp->nfsclds_sockp->nr_mtx); 5815 free(dsp->nfsclds_sockp->nr_nam, M_SONAME); 5816 free(dsp->nfsclds_sockp, M_NFSSOCKREQ); 5817 } 5818 NFSFREEMUTEX(&dsp->nfsclds_mtx); 5819 NFSFREEMUTEX(&dsp->nfsclds_sess.nfsess_mtx); 5820 for (i = 0; i < NFSV4_CBSLOTS; i++) { 5821 if (dsp->nfsclds_sess.nfsess_cbslots[i].nfssl_reply != NULL) 5822 m_freem( 5823 dsp->nfsclds_sess.nfsess_cbslots[i].nfssl_reply); 5824 } 5825 free(dsp, M_NFSCLDS); 5826 } 5827 5828 static enum nfsclds_state 5829 nfscl_getsameserver(struct nfsmount *nmp, struct nfsclds *newdsp, 5830 struct nfsclds **retdspp) 5831 { 5832 struct nfsclds *dsp, *cur_dsp; 5833 5834 /* 5835 * Search the list of nfsclds structures for one with the same 5836 * server. 5837 */ 5838 cur_dsp = NULL; 5839 TAILQ_FOREACH(dsp, &nmp->nm_sess, nfsclds_list) { 5840 if (dsp->nfsclds_servownlen == newdsp->nfsclds_servownlen && 5841 dsp->nfsclds_servownlen != 0 && 5842 !NFSBCMP(dsp->nfsclds_serverown, newdsp->nfsclds_serverown, 5843 dsp->nfsclds_servownlen)) { 5844 NFSCL_DEBUG(4, "fnd same fdsp=%p dsp=%p flg=0x%x\n", 5845 TAILQ_FIRST(&nmp->nm_sess), dsp, 5846 dsp->nfsclds_flags); 5847 /* Server major id matches. */ 5848 if ((dsp->nfsclds_flags & NFSCLDS_DS) != 0) { 5849 *retdspp = dsp; 5850 return (NFSDSP_USETHISSESSION); 5851 } 5852 5853 /* 5854 * Note the first match, so it can be used for 5855 * sequence'ing new sessions. 5856 */ 5857 if (cur_dsp == NULL) 5858 cur_dsp = dsp; 5859 } 5860 } 5861 if (cur_dsp != NULL) { 5862 *retdspp = cur_dsp; 5863 return (NFSDSP_SEQTHISSESSION); 5864 } 5865 return (NFSDSP_NOTFOUND); 5866 } 5867 5868 #ifdef notyet 5869 /* 5870 * NFS commit rpc to a DS. 5871 */ 5872 static int 5873 nfsrpc_commitds(vnode_t vp, uint64_t offset, int cnt, struct nfsclds *dsp, 5874 struct nfsfh *fhp, struct ucred *cred, NFSPROC_T *p, void *stuff) 5875 { 5876 uint32_t *tl; 5877 struct nfsrv_descript nfsd, *nd = &nfsd; 5878 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 5879 struct nfssockreq *nrp; 5880 int error; 5881 5882 nfscl_reqstart(nd, NFSPROC_COMMITDS, nmp, fhp->nfh_fh, fhp->nfh_len, 5883 NULL, &dsp->nfsclds_sess); 5884 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + NFSX_UNSIGNED); 5885 txdr_hyper(offset, tl); 5886 tl += 2; 5887 *tl = txdr_unsigned(cnt); 5888 nrp = dsp->nfsclds_sockp; 5889 if (nrp == NULL) 5890 /* If NULL, use the MDS socket. */ 5891 nrp = &nmp->nm_sockreq; 5892 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred, 5893 NFS_PROG, NFS_VER4, NULL, 1, NULL, &dsp->nfsclds_sess); 5894 if (error) 5895 return (error); 5896 if (nd->nd_repstat == 0) { 5897 NFSM_DISSECT(tl, u_int32_t *, NFSX_VERF); 5898 NFSLOCKDS(dsp); 5899 if (NFSBCMP(tl, dsp->nfsclds_verf, NFSX_VERF)) { 5900 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF); 5901 error = NFSERR_STALEWRITEVERF; 5902 } 5903 NFSUNLOCKDS(dsp); 5904 } 5905 nfsmout: 5906 if (error == 0 && nd->nd_repstat != 0) 5907 error = nd->nd_repstat; 5908 mbuf_freem(nd->nd_mrep); 5909 return (error); 5910 } 5911 #endif 5912
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